FLUORINE DISTRIBUTION

FLUORINE DISTRIBUTION

490 |>" " XBD=1389 XBD=1536 XBD=1706 XBD=1805 XBD=1881 XBD=2120 XBD=2281 XBD=2334 XBD=2493 XHG=1346 XHG=1406 XHG=1548 XHG=1758 XHG=1816 XHG=1900 XHG=...
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|>" " XBD=1389 XBD=1536 XBD=1706 XBD=1805 XBD=1881 XBD=2120 XBD=2281 XBD=2334 XBD=2493 XHG=1346 XHG=1406 XHG=1548 XHG=1758 XHG=1816 XHG=1900 XHG=2134 XHG=2294 XHG=2344 YBD=236 YBD=242 YBD=235 YBD=234 YBD=235 YHG=206>of YHG=206>dental YHG=206>enamel. YHG=205>In YHG=206>the YHG=205>China-clay YHG=204>district YHG=204>of YHG=204>Cornwall XBD=291 XBD=375 XBD=509 XBD=637 XBD=708 XBD=929 XBD=1028 XBD=1136 XBD=1198 XBD=1283 XHG=141 XHG=310 XHG=398 XHG=530 XHG=659 XHG=730 XHG=951 XHG=1049 XHG=1156 XHG=1219 YBD=241 YBD=234 YBD=235 YBD=243 YBD=246 YBD=236 YBD=236 YHG=204>During YHG=204>the YHG=206>acute YHG=206>stage YHG=216>no YHG=206>difference YHG=215>was YHG=215>seen YHG=206>in YHG=205>the " XBD=2494 XBD=1437 XBD=1509 XBD=1671 XBD=1752 XBD=1943 XBD=2001 XBD=2132 XBD=2292 XBD=2344 XHG=1345 XHG=1452 XHG=1524 XHG=1686 XHG=1767 XHG=1958 XHG=2016 XHG=2148 XHG=2307 XHG=2356 YBD=274 YBD=281 YBD=272 YBD=273 YHG=248>near YHG=244>St. YHG=244>Austell YHG=245>the YHG=253>presence YHG=244>of YHG=245>much YHG=244>apatite YHG=243>in YHG=243>addition XBD=221 XHG=920 XBD=276 XBD=353 XBD=511 XBD=678 XBD=743 XBD=906 XBD=961 XBD=1179 XBD=1287 XHG=92 XHG=235 XHG=288 XHG=369 XHG=526 XHG=678 XHG=757 XHG=975YBD=273 XHG=1192 YBD=282 YBD=275 YBD=274 YBD=281 YBD=275 YHG=252>course YHG=243>of YHG=243>the YHG=244>disease YHG=239>among YHG=246>the YHG=245>treated YHG=253>as YHG=244>compared YHG=245>with " XBD=2497 XBD=116 XHG=882 XBD=277 XBD=412 XBD=513 XBD=601 XBD=830 XBD=929 XBD=1005 XBD=1287 XBD=1387 XBD=1601 XBD=1739 XBD=1808 XBD=2000 XBD=2094 XBD=2281 XBD=2445 XHG=92 XHG=129 XHG=291 XHG=425 XHG=525 XHG=615 XHG=940 XHG=1021 XHG=1345 XHG=1415 XHG=1627 XHG=1767 XHG=1834 XHG=2028 XHG=2126 XHG=2310 XHG=2467 YBD=311 YBD=321 YBD=315 YBD=314 YBD=313 YBD=313 YBD=321 YBD=313 YBD=312 YHG=290>a YHG=282>control YHG=291>group YHG=284>that YHG=294>was YHG=284>untreated. YHG=283>In YHG=283>the YHG=283>convalescent YHG=284>to YHG=283>fluorspar YHG=283>tends YHG=283>to YHG=283>increase YHG=283>the YHG=282>fluorine YHG=282>content YHG=284>of " XBD=1288 XBD=198 XBD=317 XBD=408 XBD=470 XBD=659 XBD=761 XBD=836 XBD=1017 XBD=1180 XHG=92 XHG=211 XHG=331 XHG=419 XHG=482 XHG=673 XHG=850 XHG=1029 XHG=1192 YBD=359 YBD=354 YBD=353 YBD=352 YBD=359 YBD=352 YBD=353 YHG=322>stage YHG=322>there YHG=332>was YHG=333>no YHG=324>evidence YHG=318>that YHG=322>the YHG=322>patients YHG=323>treated YHG=322>with XBD=1570XHG=772 XBD=1739 XHG=1346 XHG=1592 YBD=360 YHG=323>circulating YHG=323>waters. " XBD=1288 XBD=1475XHG=814 XBD=1703 XBD=1784 XBD=2030 XBD=2178 XBD=2256 XBD=2493 XBD=158 XBD=288 XBD=496 XBD=782 XBD=846 XBD=1087 XBD=1179 XHG=92 XHG=191 XHG=317 XHG=527 XHG=1397 XHG=1513 XHG=1740 XHG=1817 XHG=2068 XHG=2212 XHG=2292 XHG=876 XHG=1119 XHG=1210 YBD=390 YBD=399 YBD=393 YBD=400 YBD=391 YBD=399 YBD=399 YBD=391 YBD=392 YBD=400 YHG=360>the YHG=361>drug YHG=363>excreted YHG=361>paratyphoid YHG=361>B YHG=362>organisms YHG=362>The YHG=362>tendency YHG=362>of YHG=362>phosphate YHG=362>rocks YHG=361>to YHG=361>concentrate YHG=362>for YHG=371>any " XBD=2494 XBD=1506 XBD=1593 XBD=1709 XBD=1919 XBD=1977 XBD=2019 XBD=2214 XBD=2344 XHG=1346 XHG=1524 XHG=1612 XHG=1727 XHG=1937 XHG=1996 XHG=2037 XHG=2232 XHG=2363 YBD=432 YBD=430 YBD=431 YBD=438 YBD=437 YBD=435 YHG=401>fluorine YHG=402>has YHG=402>been YHG=401>discussed YHG=401>in YHG=411>a YHG=401>previous YHG=408>paper YHG=400>(BromeXBD=241 XHG=855 XBD=408 XBD=538 XBD=636 XBD=819 XBD=974 XBD=1159 XBD=1288 XHG=92 XHG=275 XHG=442 XHG=572 XHG=673 XHG=1008 XHG=1193 YBD=431 YBD=439 YBD=432 YBD=431 YBD=438 YHG=400>shorter YHG=402>period YHG=403>than YHG=402>the YHG=400>control YHG=410>group YHG=401>treated YHG=401>with XBD=233 XHG=788 XBD=363 XBD=476 XBD=605 XBD=659 XBD=774 XBD=809 XBD=1028 XBD=1234 XBD=1288 XHG=91 XHG=286 XHG=380 XHG=489 XHG=618 XHG=675 XHG=824 XHG=1041 XHG=1248 YBD=470 YBD=471 YBD=477 YBD=470 YBD=469 YBD=476 YBD=471 YHG=439>kaolin. YHG=441>The YHG=441>drug YHG=440>failed YHG=441>to YHG=440>clear YHG=440>4 YHG=441>persistent YHG=441>excretors YHG=440>of " XBD=2496 XBD=1446 XBD=1585 XBD=1685 XBD=1776 XBD=1936 XBD=2120 XBD=2393 XHG=1346 XHG=1465 XHG=1637 XHG=1700 XHG=1792 XHG=1954 XHG=2138 XHG=2407 YBD=469 YBD=470 YBD=478 YBD=474 YBD=476 YHG=440>head YHG=441>1941). YHG=440>In YHG=440>and YHG=440>around YHG=440>Spilsby, YHG=439>Lincolnshire, YHG=447>many " XBD=2495 XBD=1449 XBD=1605 XBD=1731 XBD=1891 XBD=2018 XBD=2153 XBD=2389 XHG=1347 XHG=1477 XHG=1631 XHG=1756 XHG=1918 XHG=2043 XHG=2180 XHG=2410 YBD=510 YBD=508 YBD=509 YBD=514 YHG=480>wells YHG=479>derive YHG=479>their YHG=480>waters YHG=479>from YHG=479>rocks YHG=478>containing YHG=477>phosXBD=160 XHG=179 XBD=404 XHG=95 YBD=509 YBD=517 YHG=479>the YHG=481>organisms. " XBD=2497 XBD=221 XHG=830 XBD=460 XBD=552 XBD=760 XBD=814 XBD=894 XBD=1007 XBD=1097 XBD=1288 XBD=1496 XBD=1706 XBD=1953 XBD=2134 XBD=2188 XBD=2408 XHG=144 XHG=238 XHG=476 XHG=566 XHG=775 XHG=911YBD=547 XHG=1020 XHG=1112 XHG=1348 XHG=1547 XHG=1730 XHG=1976 XHG=2157 XHG=2212 XHG=2425 YBD=549 YBD=556 YBD=555 YBD=549 YBD=556 YBD=555 YBD=548 YHG=519>The YHG=519>absorption YHG=517>and YHG=518>excretion YHG=517>of YHG=518>the YHG=519>drug YHG=527>was YHG=517>followed YHG=519>phates. YHG=518>Around YHG=518>Cambridge YHG=517>fluorine YHG=517>is YHG=515>associated YHG=516>with " XBD=2497 XBD=1577 XBD=1685 XBD=1745 XBD=1886 XBD=2122 XBD=2217 XBD=2342 XHG=1348 XHG=1592 XHG=1702 XHG=1757 XHG=1898 XHG=2138 XHG=2269 XHG=2356 YBD=587 YBD=595 YBD=588 YBD=594 YBD=586 YBD=593 YHG=558>phosphatic YHG=558>beds YHG=558>of YHG=558>Upper YHG=558>Cretaceous YHG=566>age. YHG=556>The YHG=556>presence XBD=134 XHG=853 XBD=175 XBD=263 XBD=460 XBD=551 XBD=715 XBD=772 XBD=836 XBD=936 XBD=1167 XBD=1290 XHG=93 XHG=151 XHG=190 XHG=278 XHG=513 XHG=566 XHG=730 XHG=790 XHG=951 XHG=1197 YBD=588 YBD=588 YBD=589 YBD=595 YBD=585 YBD=586 YBD=587 YBD=592 YHG=559>in YHG=567>a YHG=558>few YHG=558>patients. YHG=557>It YHG=556>seemed YHG=557>to YHG=556>be YHG=557>well YHG=558>tolerated YHG=557>only ; " XBD=2498 XBD=1394 XBD=1567 XBD=1627 XBD=1792 XBD=1960 XBD=2023 XBD=2200 XBD=2331 XBD=2409 XHG=1349 XHG=1409 XHG=1586 XHG=1646 XHG=1811 XHG=1980 XHG=2040 XHG=2218 XHG=2348 XHG=2425 YBD=627 YBD=625 YBD=626 YHG=596>fluorine YHG=597>in YHG=597>certain YHG=606>sources YHG=597>of YHG=596>London YHG=596>water YHG=595>has YHG=595>been XBD=118 XHG=845 XBD=201 XBD=255 XBD=317 XBD=500 XBD=665 XBD=830 XBD=922 XBD=1113 XBD=1169 XBD=1289 XHG=95 XHG=132 XHG=214 XHG=272 XHG=331 XHG=514 XHG=678 XHG=934 XHG=1129 XHG=1183 YBD=626 YBD=627 YBD=625 YBD=633 YBD=626 YHG=597>3 YHG=598>out YHG=597>of YHG=597>58 YHG=596>patients YHG=595>treated YHG=596>showed YHG=605>any YHG=596>evidence YHG=596>of YHG=597>toxic XBD=279 XHG=806 XBD=386 XBD=492 XBD=710 XBD=778 XBD=893 XBD=1049 XBD=1118 XBD=1183 XBD=1290 XHG=97 XHG=309 XHG=414 XHG=521 XHG=738 XHG=921 XHG=1077 XHG=1148 XHG=1212 YBD=670 YBD=664 YBD=664 YHG=637>reaction, YHG=635>and YHG=635>this YHG=634>consisted YHG=634>of YHG=634>skin YHG=635>rashes YHG=636>in YHG=635>2, YHG=634>and " XBD=2497 XBD=1586 XBD=1666 XBD=1760 XBD=2059 XBD=2217 XBD=2364 XHG=1350 XHG=1613 XHG=1695 XHG=1787 XHG=2087 XHG=2244 XHG=2391 YBD=673 YBD=665 YBD=664 YBD=670 YHG=635>determined YHG=636>by YHG=636>the YHG=636>Metropolitan YHG=635>Water YHG=633>Board YHG=634>(1936). " XBD=2499 XBD=317 XHG=716 XBD=558 XBD=612 XBD=663 XBD=720 XBD=1461 XBD=1608 XBD=1756 XBD=1880 XBD=2060 XBD=2333 XHG=94 XHG=332 XHG=571 XHG=632 XHG=1349 XHG=1485 XHG=1631 XHG=1780 XHG=1904 XHG=2083 XHG=2354 YBD=705 YBD=703 YBD=684 YBD=704 YBD=705 YHG=674>abdominal YHG=673>discomfort YHG=674>in YHG=673>1. YHG=680>’ YHG=675>Some YHG=674>South YHG=675>Wales YHG=675>coals YHG=675>contain YHG=673>considerable YHG=674>amounts

XBD=219 XHG=737 XBD=455 XBD=609 XBD=721 XBD=814 XBD=1102 XBD=1290 XHG=143 XHG=235 XHG=472 XHG=624 XHG=827YBD=743 XHG=1117 YBD=751 YBD=749 YBD=750 YBD=750 YHG=714>The YHG=714>experience YHG=713>gained YHG=713>from YHG=713>this YHG=713>investigation YHG=714>suggests " XBD=2499 XBD=1394 XBD=1644 XBD=1738 XBD=1943 XBD=2120 XBD=2180 XBD=2268 XBD=2307 XHG=1349 XHG=1406 XHG=1661 XHG=1755 XHG=1959 XHG=2137 XHG=2193 XHG=2285 XHG=2324 YBD=751 YBD=752 YBD=744 YBD=743 YHG=714>of YHG=714>phosphorus YHG=714>and YHG=714>probably YHG=714>because YHG=713>of YHG=713>this YHG=722>a YHG=713>detectable " XBD=2500 XBD=1511 XBD=1569 XBD=1749 XBD=1976 XBD=2023 XBD=2249 XBD=2352 XBD=2421 XHG=1349 XHG=1525 XHG=1580 XHG=1800 XHG=1991 XHG=2038 XHG=2263 XHG=2365 XHG=2434 YBD=783 YBD=782 YBD=784 YHG=754>amount YHG=753>of YHG=753>fluorine. YHG=753>Fluorine YHG=753>is YHG=752>associated YHG=752>with YHG=752>the YHG=761>area XBD=184 XHG=845 XBD=230 XBD=349 XBD=515 XBD=759 XBD=821 XBD=923 XBD=1028 XBD=1290 XHG=95 XHG=206 XHG=254 XHG=372 XHG=537 XHG=781 XHG=943 XHG=1050 YBD=783 YBD=782 YBD=783 YBD=790 YBD=783 YBD=790 YHG=753>that YHG=762>a YHG=762>very YHG=752>careful YHG=752>evaluation YHG=752>of YHG=762>any YHG=762>new YHG=752>therapeutic " XBD=2500 XBD=1532 XBD=1608 XBD=1796 XBD=1921 XBD=1985 XBD=2233 XHG=1350 XHG=1555 XHG=1628 XHG=1817 XHG=1944 XHG=2009 XHG=2260 YBD=830 YBD=822 YBD=823 YBD=829 YHG=792>occupied YHG=792>by YHG=792>Jurassic YHG=793>clays YHG=793>in YHG=793>south-west YHG=791>Bedfordshire, XBD=191 XHG=903 XBD=316 XBD=382 XBD=514 XBD=663 XBD=884 XBD=953 XBD=1183 XBD=1245 XBD=1289 XHG=95 XHG=209 XHG=337 XHG=402 XHG=537 XHG=685 XHG=975 XHG=1204 XHG=1265 YBD=830 YBD=823 YBD=831 YBD=822 YBD=822 YBD=821 YHG=792>drug YHG=793>must YHG=792>be YHG=792>made YHG=792>before YHG=793>accepting YHG=793>its YHG=792>usefulness YHG=792>in YHG=800>a " XBD=2500 XBD=1749 XBD=2061 XBD=2319 XBD=2400 XHG=1350 XHG=1763 XHG=2079 XHG=2331 XHG=2411 YBD=869 YBD=867 YBD=862 YHG=832>Northamptonshire, YHG=831>Warwickshire, YHG=831>Oxfordshire YHG=831>and YHG=831>BerkXBD=238 XHG=846 XBD=300 XBD=490 XBD=552 XBD=829 XBD=963 XHG=96 XHG=258 XHG=322 XHG=511 XHG=571 YBD=862 YBD=870 YBD=862 YHG=832>disease YHG=842>so YHG=832>variable YHG=841>as YHG=832>paratyphoid YHG=832>fever. " XBD=2501 XBD=1462 XBD=1647 XBD=1867 XBD=1973 XBD=2244 XBD=2396 XHG=1350 XHG=1495 XHG=1677 XHG=1895 XHG=2005 XHG=2294 XHG=2423 YBD=906 YBD=901 YBD=900 YBD=908 YHG=870>shire, YHG=871>Central YHG=871>Somerset YHG=871>and YHG=871>Glamorgan. YHG=870>Some YHG=871>clays XBD=205 XHG=790 XBD=313 XBD=372 XBD=508 XBD=622 XBD=699 XBD=768 XBD=925 XBD=1095 XBD=1233 XBD=1293 XHG=141 XHG=226 XHG=333 XHG=394 XHG=529 XHG=645 XHG=720 XHG=947YBD=916 XHG=1116 XHG=1254 YBD=910 YBD=911 YBD=910 YBD=909 YHG=883>We YHG=882>wish YHG=885>to YHG=882>thank YHG=882>Prof. YHG=883>W. YHG=883>M. YHG=883>Frazer, YHG=882>medical YHG=880>officer YHG=881>of " XBD=1443 XBD=1508 XBD=1794 XBD=1915 XBD=2035 XBD=2188 XBD=2251 XBD=2417 XBD=2500 XHG=1350 XHG=1466 XHG=1529 XHG=1816 XHG=1938 XHG=2057 XHG=2211 XHG=2274 XHG=2436 YBD=948 YBD=940 YBD=941 YHG=911>used YHG=911>in YHG=910>brickmaking YHG=911>have YHG=910>been YHG=912>shown YHG=912>to YHG=910>contain YHG=919>con" XBD=220 XBD=301 XBD=524 XBD=614 XBD=684 XBD=754 XBD=961 XBD=1060 XBD=1149 XBD=1220 XBD=1288 XHG=96 XHG=247 XHG=328 XHG=552 XHG=642 XHG=712 XHG=782 XHG=990 XHG=1087 XHG=1179 XHG=1248 YBD=950 YBD=959 YBD=951 YBD=950 YBD=958 YBD=949 YBD=949 YHG=922>health YHG=921>for YHG=921>Liverpool, YHG=922>Dr. YHG=922>A. YHG=922>E. YHG=922>Hodgson, YHG=921>and YHG=920>Dr. YHG=921>O. YHG=921>F. " XBD=1536 XBD=1732 XBD=1793 XBD=1976 XHG=1350 XHG=1553 XHG=1749 XHG=1806 YBD=981 YBD=980 YHG=950>siderable YHG=951>amounts YHG=951>of YHG=948>fluorine. "|>"XBD=1290 XBD=259 XBD=457 XBD=895 XBD=1171 XBD=808XHG=856 XHG=96 XHG=308 XHG=939 XHG=1219 XHG=504 YBD=995 YBD=990 YBD=989 YBD=998 YBD=1001 YBD=989 YHG=962>Thomas, YHG=962>medical YHG=961>of YHG=961>Fazackerley YHG=961>and YHG=962>superintendents " XBD=2436 XBD=318 XHG=740 XBD=525 XBD=601 XBD=716 XBD=986 XBD=1086 XBD=1154 XBD=1223 XBD=1288 XHG=95 XHG=340 XHG=548 XHG=624 XHG=1024 XHG=1110 XHG=1179 XHG=1246 YBD=1038 YBD=1028 YBD=1029 YBD=1037 YBD=1030 YBD=1029 YHG=1002>Broadgreen YHG=1001>Hospitals YHG=1001>for YHG=1001>their YHG=1001>cooperation YHG=1001>Dr. YHG=1002>R. YHG=1001>de YHG=1000>V. ; " XBD=1625 XBD=1860 XBD=1941 XBD=2174 XHG=1440 XHG=1654 XHG=1891 XHG=1971 XHG=2205 YBD=1044 YBD=1045 YHG=1022>CLINICAL YHG=1022>EVIDENCE YHG=1022>OF YHG=1022>FLUORINE YHG=1021>ABSORPTION " XBD=1301 XBD=193 XHG=821 XBD=291 XBD=379 XBD=505 XBD=644 XBD=794 XBD=874 XBD=1064 XBD=1185 XHG=98 XHG=220 XHG=317 XHG=408 XHG=530 XHG=670 XHG=900 XHG=1089 XHG=1219 YBD=1077 YBD=1069 YBD=1073 YBD=1068 YBD=1068 YBD=1068 YBD=1076 YHG=1041>King YHG=1041>and YHG=1041>Dr. YHG=1040>John YHG=1039>Allen, YHG=1040>MOHs YHG=1040>for YHG=1041>Taunton YHG=1039>rural YHG=1040>and " XBD=1478 XBD=1621 XBD=1778 XBD=1836 XBD=1981 XBD=2076 XBD=2190 XBD=2296 XBD=2332 XHG=1400 XHG=1491 XHG=1632 XHG=1794 XHG=1848 XHG=1992 XHG=2092 XHG=2205 XHG=2310 XHG=2347 YBD=1093 YBD=1101 YBD=1094 YBD=1102 YHG=1064>The YHG=1063>dental YHG=1064>enamel YHG=1064>of YHG=1064>people YHG=1064>who YHG=1064>have YHG=1064>used YHG=1074>a YHG=1063>drinking" XBD=2502 XBD=209 XHG=822 XBD=385 XBD=645 XBD=731 XBD=793 XBD=861 XBD=1081 XBD=1208 XBD=1290 XHG=95 XHG=227 XHG=405 XHG=667 XHG=759 XHG=890 XHG=1102 XHG=1236 YBD=1108 YBD=1107 YBD=1116 YBD=1108 YBD=1114 YBD=1108 YHG=1080>urban YHG=1079>districts YHG=1079>respectively, YHG=1079>Dr. YHG=1080>J. YHG=1080>F. YHG=1080>Davidson, YHG=1079>MOH YHG=1080>for " XBD=1469 XBD=1726 XBD=1920 XBD=1997 XBD=2220 XHG=1350 XHG=1505 XHG=1762 XHG=1956 XHG=2033 XHG=2256 YBD=1140 YBD=1133 YBD=1136 YHG=1104>water YHG=1103>containing YHG=1103>fluorine YHG=1104>in YHG=1103>sufficient YHG=1103>concentration " XBD=2504 XBD=272 XHG=780 XBD=362 XBD=446 XBD=508 XBD=569 XBD=700 XBD=764 XBD=930 XBD=1046 XBD=1135 XBD=1290 XHG=97 XHG=291 XHG=380 XHG=464 XHG=526 XHG=587 XHG=711 XHG=940 XHG=1064 XHG=1147 YBD=1147 YBD=1147 YBD=1146 YBD=1155 YBD=1156 YBD=1147 YHG=1119>Somerset YHG=1118>and YHG=1117>Mr. YHG=1119>D. YHG=1119>R. YHG=1119>Wood YHG=1119>for YHG=1119>friendly YHG=1119>help YHG=1119>and ; YHG=1119>Lederle " XBD=1488 XBD=1590 XBD=1646 XBD=1780 XBD=1837 XBD=1913 XBD=2059 XBD=2117 XBD=2370 XBD=2420 XBD=2504 XHG=1351 XHG=1502 XHG=1604 XHG=1659 XHG=1795 XHG=1848 XHG=1928 XHG=2074 XHG=2128 XHG=2383 XHG=2428 YBD=1181 YBD=1180 YBD=1172 YBD=1173 YBD=1174 YHG=1143>during YHG=1143>part YHG=1151>or YHG=1143>whole YHG=1143>the YHG=1143>period YHG=1143>calcification YHG=1143>of YHG=1144>their " XBD=1289 XBD=342 XHG=866 XBD=414 XBD=619 XBD=695 XBD=810 XBD=962 XBD=1031 XBD=1149 XBD=1187 XHG=74 XHG=359 XHG=431 XHG=634 XHG=711 XHG=977 XHG=1053 XHG=1173 XHG=1201 YBD=1190 YBD=1184 YBD=1186 YBD=1194 YBD=1188 YBD=1187 YBD=1187 YHG=1157>Laboratories YHG=1156>for YHG=1157>supplying YHG=1158>the YHG=1159>drug. YHG=1160>Data YHG=1159>for YHG=1160>table YHG=1168>i YHG=1167>were " XBD=1458 XBD=1512 XBD=1810 XBD=1885 XBD=1974 XBD=2172 XBD=2238 XBD=2365 XBD=2503 XHG=1351 XHG=1480 XHG=1535 XHG=1833 XHG=1908 XHG=1997 XHG=2195 XHG=2255 XHG=2385 YBD=1213 YBD=1219 YBD=1220 YBD=1212 YBD=1221 YHG=1182>teeth YHG=1182>is YHG=1182>characterised YHG=1182>by YHG=1183>the YHG=1192>presence YHG=1183>of YHG=1183>white YHG=1191>opaque " XBD=1182 XBD=220 XHG=821 XBD=339 XBD=404 XBD=483 XBD=571 XBD=679 XBD=743 XBD=804 XBD=972 XHG=97 XHG=236 XHG=354 XHG=420 XHG=499 XHG=587 XHG=698 XHG=761 XHG=989 YBD=1233 YBD=1234 YBD=1225 YBD=1227 YBD=1235 YBD=1235 YHG=1196>kindly YHG=1196>given YHG=1197>by YHG=1197>the YHG=1198>late YHG=1198>Prof. YHG=1199>H. YHG=1199>D. YHG=1198>Wright, YHG=1198>Liverpool. " XBD=2504 XBD=1457 XHG=2446 XBD=1521 XBD=1662 XBD=1813 XBD=2027 XBD=2122 XBD=2183 XBD=2269 XBD=2430 XHG=1351 YBD=1255 XHG=1478 XHG=1539 XHG=1685 XHG=1832 XHG=2049 XHG=2142 XHG=2204 XHG=2287 YBD=1260 YHG=1225>and YBD=1258 YBD=1259 YBD=1252 YHG=1223>spots YHG=1232>or YHG=1222>bands YHG=1222>(white YHG=1222>mottling) YHG=1223>due YHG=1224>to YHG=1223>the YHG=1222>fluorine REFERENCES " XBD=2504 XBD=1459 XHG=2425 XBD=1518 XBD=1713 XBD=1784 XBD=1935 XBD=2103 XBD=2290 XBD=2410 XHG=1352 YBD=1295 XHG=1478 XHG=1537 XHG=1731 XHG=1804 XHG=1954 XHG=2123 XHG=2338 YBD=1300 YBD=1299 YBD=1292 YHG=1263>often YHG=1262>in YHG=1262>addition YHG=1262>by YHG=1262>brown YHG=1263>stained YHG=1262>patches. YHG=1262>The YHG=1263>stain D. E. W. and R. (1941) Brit. med. J. ii, 497. Anderson, XHG=2338 Cruickshank, " XBD=2398 XBD=1569 XBD=1683 XBD=1763 XBD=1925 XBD=1981 XBD=2117 XBD=2155 XBD=2272 XBD=2328 XHG=1352 XHG=1583 XHG=1698 XHG=1778 XHG=1941 XHG=1997 XHG=2132 XHG=2170 XHG=2287 YBD=1340 YBD=1331 YBD=1333 YBD=1332 YHG=1302>penetrates YHG=1302>from YHG=1302>the YHG=1302>surface YHG=1303>to YHG=1302>about YHG=1312>a YHG=1302>third YHG=1302>of YHG=1303>the S. and L. Proc. Soc. exp. Biol., N. Y. 47, Bornstein,XHG=2360 Strauss, (1941)YHG=1343>eruption " XBD=2504 XBD=1396 XBD=1478 XBD=1645 XBD=1742 XBD=1793 XBD=2033 XBD=2095 XBD=2228 XBD=2342 XHG=1352 XHG=1412 XHG=1499 XHG=1665 XHG=1762 XHG=1815 XHG=2054 XHG=2116 YBD=1372 YBD=1373 YBD=1379 YHG=1341>of YHG=1343>the YHG=1343>enamel YHG=1342>and YHG=1342>is YHG=1342>considered YHG=1343>to YHG=1351>occur YHG=1342>after 112. XHG=2247 " XBD=2505 XBD=1586 XBD=1712 XBD=1821 XBD=1963 XBD=2093 XBD=2247 XBD=2341 XHG=1356 XHG=1608 XHG=1734 XHG=1844 XHG=2014 XHG=2116 XHG=2268 XHG=2360 YBD=1418 YBD=1419 YBD=1417 YBD=1411 YBD=1413 YHG=1382>(Ainsworth YHG=1381>1933, YHG=1382>Day YHG=1382>1940). YHG=1381>The YHG=1382>extent YHG=1382>and YHG=1381>distribumed. J., Nashville, Eblen, J. G. (1942) SthYBD=1412 35, 302. Personal communication. Felix, A. (1941) " XBD=2504 XBD=1437 XBD=1502 XBD=1592 XBD=1793 XBD=1982 XBD=2107 XBD=2195 XBD=2388 XBD=2442 XHG=1352 XHG=1459 XHG=1526 XHG=1613 XHG=1815 XHG=2003 XHG=2129 XHG=2217 XHG=2405 XHG=2456 YBD=1450 YBD=1458 YBD=1451 YBD=1453 YHG=1421>tion YHG=1421>mottling YHG=1420>depends YHG=1430>upon YHG=1421>the YHG=1421>duration YHG=1421>of YHG=1422>the Hall, L. C.XHG=2444 20, 328.YHG=1461>The (1942) J. Pediat. " XBD=2504 XBD=1512 XBD=1656 XBD=1747 XBD=1839 XBD=1931 XBD=2086 XBD=2152 XBD=2237 XBD=2408 XHG=1354 XHG=1526 XHG=1670 XHG=1773 XHG=1861 XHG=1954 XHG=2108 XHG=2171 XHG=2260 YBD=1490 YBD=1498 YBD=1491 YBD=1497 YBD=1493 YHG=1460>fluorine YHG=1460>intake YHG=1461>and YHG=1461>the YHG=1470>age YHG=1460>period YHG=1460>of YHG=1460>the YHG=1460>subject. Holt, H. D., Vaughan, A. C. T. and Wright, H. D. (1942) Lancet, " XBD=2507 XBD=1487 XBD=1553 XBD=1752 XBD=1808 XBD=2067 XBD=2137 XBD=2221 XBD=2360 XBD=2464 XHG=1353 YBD=1533 XHG=1511 XHG=1570 XHG=1778 XHG=1832 XHG=2085 XHG=2155 XHG=2238 XHG=2383 YBD=1538 YHG=1504>of YBD=1530 YBD=1539 YBD=1531 YBD=1532 YHG=1501>degree YHG=1500>of YHG=1500>mottling YHG=1501>is YHG=1500>determined YHG=1501>by YHG=1501>the YHG=1502>actual YHG=1502>level i, 133.XHG=2477 Path. Bact. 42, 455. Jones, E. R. (1936) J. YBD=1573 " XBD=2504 XBD=1420 XBD=1592 XBD=1748 XBD=1918 XBD=1969 XBD=2047 XBD=2160 XBD=2212 XBD=2373 XHG=1353 XHG=1434 XHG=1606 XHG=1800 XHG=1927 XHG=1981 XHG=2057 XHG=2169 XHG=2216 XHG=2386 YBD=1579 YBD=1571 YBD=1572 YHG=1541>fluorine YHG=1541>intake. YHG=1541>Many YHG=1541>of YHG=1541>the YHG=1550>cases YHG=1542>of YHG=1541>mottled YHG=1543>enamel E. E. (1942) New Engl. J. Med. 226, 419. Kattwinkel, " XBD=2505 XBD=1409 XBD=1521 XBD=1650 XBD=1719 XBD=1854 XBD=2008 XBD=2103 XBD=2427 XHG=1353 XHG=1444 XHG=1555 XHG=1678 XHG=1749 XHG=1885 XHG=2037 XHG=2132 XHG=2448 YBD=1611 YBD=1619 YBD=1613 YHG=1590>we YHG=1590>saw YHG=1590>were YHG=1582>in YHG=1590>areas YHG=1581>where YHG=1582>the YHG=1581>drinking-water YHG=1583>had Levi, J. E. and Willen, A. (1941) J. Amer. med. Ass. 116, 2258. |>" " XBD=1475 XBD=1645 XBD=1733 XBD=1896 XBD=2069 XBD=2161 XBD=2285 XBD=2336 XBD=2393 XBD=2504 XBD=1544 XHG=1354 XHG=1557 XHG=1666 XHG=1751 XHG=1911 XHG=2088 XHG=2179 XHG=2299 XHG=2350 XHG=2412 XHG=1486 YBD=1658 YBD=1657 YBD=1651 YBD=1659 YBD=1650 YHG=1621>about YHG=1622>part YHG=1630>per YHG=1621>million YHG=1620>fluorine YHG=1622>(see YHG=1622>Dean YHG=1622>et YHG=1621>al. YHG=1621>0-3 K. E. A. C.,YHG=1623>1942). L. B. and Walker, E. Marshall, jun., Bratton, Edwards,

dpth

Bull. Johns YBD=1692 Hopk. Hosp. YHG=1662>in 68, 94. (1941)XHG=2476 " XBD=2459 XBD=2505 XBD=1395 XBD=1449 XBD=1566 XBD=1633 XBD=1849 XBD=2054 XBD=2122 XBD=2209 XBD=2361 XHG=1355 XHG=1419 XHG=1477 XHG=1592 XHG=1659 XHG=1873 XHG=2080 XHG=2144 XHG=2236 XHG=2385 YBD=1691 YBD=1697 YBD=1690 YBD=1698 YHG=1661>It YHG=1661>is YHG=1670>easy YHG=1661>to YHG=1661>recognise YHG=1661>mottling YHG=1661>of YHG=1661>the YHG=1661>degree YHG=1671>seen T.

" " " " " " "

J. and Litchfield, — — White, H.J. YBD=1739 jun. (1940) Ibid, 67, 163. XBD=2504 XBD=1522 XBD=1670 XBD=1829 XBD=1922 XBD=2030 XBD=2174 XBD=2267 XBD=2314 XBD=2434 XHG=1354 XHG=1551 XHG=1692 XHG=1856 XHG=1948 XHG=2056 XHG=2199 XHG=2286 XHG=2339 YBD=1735 YBD=1736 YBD=1729 YBD=1730 YBD=1732 YHG=1700>Maldon, YHG=1700>Essex YHG=1701>(where YHG=1700>the YHG=1701>well YHG=1701>water YHG=1701>has YHG=1700>,5 YHG=1703>parts YHG=1710>per St. Louis. Diseases, Top, F. H.XHG=2453 (1941) Communicable XBD=1501 XBD=1690 XBD=1803 XBD=1871 XBD=1952 XBD=2084 XBD=2248 XBD=2364 XBD=2445 XBD=2505 XHG=1353 XHG=1516 XHG=1707 XHG=1818 XHG=1886 XHG=1968 XHG=2100 XHG=2264 XHG=2379 XHG=2457 YBD=1776 YBD=1777 YBD=1770 YBD=1778 YBD=1772 YBD=1771 YHG=1740>million YHG=1740>fluorine) YHG=1740>both YHG=1740>by YHG=1740>the YHG=1740>white YHG=1749>opaque YHG=1749>areas YHG=1741>and YHG=1741>the Hlth Watt, J. and Peterson, J. S. (1942) Publ. Rep., Wash. 57, 872. XBD=1534 XHG=2373 XBD=1633 XBD=1792 XBD=1968 XBD=2089 XBD=2211 XBD=2279 XBD=2349 XBD=2506 XHG=1355 YBD=1818 XHG=1561 XHG=1657 XHG=1818 XHG=1995 XHG=2113 XHG=2237 XHG=2303 YBD=1817 YHG=1781>staining YBD=1810 YBD=1811 YHG=1780>staining, YHG=1780>but YHG=1781>milder YHG=1780>degrees YHG=1780>with YHG=1780>little YHG=1790>or YHG=1790>no XBD=1454 XHG=2477 XBD=1596 XBD=1725 XBD=1909 XBD=2008 XBD=2226 XBD=2321 XBD=2453 XBD=2508 XHG=1355 XHG=1489 XHG=1628 XHG=1758 XHG=1962 XHG=2040 XHG=2258 XHG=2354 YBD=1851 YBD=1857 YBD=1858 YBD=1850 YHG=1820>have YHG=1820>often YHG=1821>been YHG=1820>missed. YHG=1820>In YHG=1821>assessing YHG=1820>the YHG=1821>grade YHG=1820>of FLUORINE DISTRIBUTION XBD=1527 XHG=2295 XBD=1604 XBD=1719 XBD=1783 XBD=1875 XBD=2055 XBD=2188 XBD=2274 XBD=2506 XHG=1356 XHG=1549 XHG=1626 XHG=1741 XHG=1806 XHG=1896 XHG=2077 XHG=2210 YBD=1898 YBD=1890 YBD=1891 YHG=1859>fluorosis YHG=1870>we YHG=1861>used YHG=1870>as YHG=1870>our YHG=1860>original YHG=1860>guide YHG=1860>the YHG=1860>illustrations XBD=1433 XBD=1682 XBD=1811 XBD=1880 XBD=2008 XBD=2151 XBD=2245 XBD=2445 XBD=2506 XHG=1356 YBD=1929 XHG=1451 XHG=1700 XHG=1828 XHG=1899 XHG=2028 XHG=2169 XHG=2262 XHG=2458 YBD=1938 YBD=1937 YBD=1936 YBD=1930 YHG=1900>description YHG=1900>given YHG=1900>by YHG=1900>Dean YHG=1900>(1938) YHG=1900>and YHG=1901>examined YHG=1901>the M. MURRAY MARGARET C. N. BROMEHEAD XBD=1464 XBD=1525 XBD=1719 XBD=1833 XBD=1919 XBD=2066 XBD=2155 XBD=2327 XBD=2405 XBD=2505 XHG=1356 XHG=1484 XHG=1545 XHG=1739 XHG=1854 XHG=1941 XHG=2087 XHG=2175 XHG=2346 XHG=2423 YBD=1969 YHG=1939>judgYBD=1978 YBD=1970 YBD=1977 YHG=1940>teeth YHG=1940>in YHG=1940>daylight YHG=1940>with YHG=1940>the YHG=1940>naked YHG=1949>eye YHG=1939>making YHG=1941>the F G S D SC LOND B A OXFD,

" XBD=2506 XBD=1464 XBD=1532 XBD=1615 XBD=1768 XBD=1826 XBD=1867 XBD=2015 XBD=2181 XBD=2252 XBD=2332 XBD=2446 XHG=1357 LECTURER XHG=1482 XHG=1548 XHG=1631 XHG=1786 XHG=1844 XHG=1884 XHG=2067 XHG=2197 XHG=2269 XHG=2348 XHG=2458 YBD=2010 YBD=2009 YBD=2008 YHG=1980>ment YHG=1989>on YHG=1980>mouth YHG=1989>as YHG=1989>a YHG=1979>whole. YHG=1979>Later YHG=1988>we YHG=1980>cut YHG=1979>down YHG=1979>the HM GEOLOGICAL IN BIOLOGICAL

CHEMISTRY,

BEDFORD

SURVEY FORYHG=2027>severe, " XBD=2369 XBD=2504 XBD=1520 XBD=1587 XBD=1758 XBD=1984 XBD=2047 XBD=2115 XHG=1358 COLLEGE XHG=1544 XHG=1613 XHG=1785 XHG=2013 XHG=2074 XHG=2142 XHG=2395 YBD=2058 YBD=2055 YBD=2049 YBD=2057 YBD=2053 YHG=2019>number YHG=2019>of YHG=2020>grades, YHG=2019>originally YHG=2020>7, YHG=2020>to YHG=2019>4-namely, WOMEN, UNIVERSITY OF LONDON " XBD=2032 XBD=1566 XHG=1818 XBD=1697 XBD=1800 XBD=1911 XHG=1927 DAGMAR XHG=1358 XHG=1590 XHG=1723 YBD=2095C. YHG=2060>mild. YBD=2089 YBD=2098 YBD=2090 YHG=2059>moderate, YHG=2060>mild, YHG=2060>and YHG=2069>very WILSON

" XBD=2477 XBD=1608 XHG=2292 XBD=1966 XBD=2042 XBD=2267 XBD=2334 XHG=2357 XHG=1405 XHG=1632 XHG=1992 XHG=2066 YBD=2154 YBD=2153 YBD=2152 YHG=2131>CHEMICAL YHG=2131>DETERMINATION YHG=2132>OF YHG=2131>FLUORINE YHG=2131>IN M D GLASG, M R C P, YHG=2130>WATER F R C O G, D P H WOMEN’S MEDICAL SERVICE, INDIA (RETD)

" XBD=2505 XBD=1488 XHG=2351 XBD=1660 XBD=1772 XBD=1852 XBD=2094 XBD=2271 XBD=2331 XHG=1409 YBD=2209 XHG=1503 XHG=1679 XHG=1793 XHG=1875 XHG=2116 XHG=2292 YBD=2205 YHG=2172>drinkingYBD=2211 YBD=2204 YBD=2203 YHG=2173>The YHG=2175>method YHG=2173>used YHG=2174>for YHG=2174>estimating YHG=2171>fluorine YHG=2174>in "" XBD=2505 XBD=1479 XBD=1565 XBD=1739 XBD=1853 XBD=2034 XBD=2095 XBD=2260 XHG=1360 XHG=1497 XHG=1584 XHG=1758 XHG=1871 XHG=2052 XHG=2117 XHG=2280 YBD=2245 YBD=2252 YBD=2244 YBD=2250 YBD=2243 YHG=2214>water YHG=2214>has YHG=2214>already YHG=2214>been YHG=2214>referred YHG=2215>to YHG=2213>(Glock, YHG=2209>Lowaterand XBD=191 XHG=797 XBD=239 XBD=342 XBD=442 XBD=678 XBD=782 XBD=956 XBD=1003 XBD=1071 XBD=1301 XHG=147 XHG=206 XHG=256 XHG=357 XHG=459 XHG=694 XHG=972YBD=2256 XHG=1020 XHG=1087 YBD=2257 YBD=2264 YBD=2256 YBD=2256 YBD=2264 YHG=2228>IT YHG=2228>is YHG=2236>now YHG=2227>well YHG=2226>recognised YHG=2226>that YHG=2226>fluorine YHG=2226>is YHG=2236>an YHG=2226>important "" XBD=2505 XBD=1516 XBD=1680 XBD=1810 XBD=2042 XBD=2218 XBD=2320 XHG=1334 XHG=1560 XHG=1732 XHG=1851 XHG=2083 XHG=2259 XHG=2357 YBD=2290 YBD=2291 YBD=2283 YBD=2288 YHG=2253>Murray YHG=2255>1941). YHG=2251>The YHG=2254>following YHG=2253>figures YHG=2262>are YHG=2249>arranged XBD=201 XHG=835 XBD=384 XBD=441 XBD=601 XBD=817 XBD=982 XBD=1029 XBD=1153 XBD=1193 XBD=1328 XHG=97 XHG=219 XHG=399 XHG=455 XHG=616 XHG=996YBD=2297 XHG=1044 XHG=1171 XHG=1211 YBD=2297 YBD=2296 YBD=2301 YBD=2303 YBD=2296 YBD=2303 YBD=2295 YBD=2296 YHG=2268>trace YHG=2267>element YHG=2267>in YHG=2267>human YHG=2266>nutrition, YHG=2266>though YHG=2266>it YHG=2267>plays YHG=2275>a YHG=2260>dual "" XBD=2506 XBD=1563 XBD=1627 XBD=1835 XBD=1937 XBD=2027 XBD=2208 XBD=2261 XBD=2462 XHG=1361 XHG=1587 XHG=1652 XHG=1860 XHG=1961 XHG=2050 XHG=2231 XHG=2285 XHG=2478 YBD=2331 YBD=2328 YBD=2324 YBD=2323 YBD=2330 YBD=2319 YHG=2293>according YHG=2294>to YHG=2294>counties, YHG=2294>and YHG=2294>the YHG=2292>fluorine YHG=2292>is YHG=2291>expressed YHG=2290>in XBD=187 XHG=818 XBD=321 XBD=528 XBD=741 XBD=800 XBD=889 XBD=1003 XBD=1098 XBD=1301 XHG=97 XHG=206 XHG=337 XHG=545 XHG=757 XHG=906 XHG=1019 XHG=1115 YBD=2342 YBD=2344 YBD=2336 YBD=2335 YBD=2335 YBD=2335 YBD=2343 YHG=2306>r6le, YHG=2306>being YHG=2306>probably YHG=2306>beneficial YHG=2307>at YHG=2314>one YHG=2305>level YHG=2306>and YHG=2305>certainly " XBD=1468 XBD=1553 XBD=1725 XBD=1963 XBD=2021 XBD=2336 XBD=2412 XHG=1361 XHG=1486 XHG=1568 XHG=1744 XHG=1980 XHG=2037 XHG=2352 XHG=2425 YBD=2368 YBD=2363 YBD=2370 YBD=2361 YHG=2332>parts YHG=2342>per YHG=2334>million, YHG=2333>equivalent YHG=2334>to YHG=2332>miorogrammes YHG=2340>per YHG=2338>c.cm. " XBD=2505 XBD=327 XHG=793 XBD=383 XBD=535 XBD=678 XBD=781 XBD=942 XBD=1026 XBD=1302 XHG=99 XHG=339 XHG=395 XHG=587 XHG=690 XHG=956 XHG=1037 YBD=2376 YBD=2376 YBD=2375 YBD=2375 YBD=2375 YHG=2346>deleterious YHG=2346>at YHG=2347>others. YHG=2346>This YHG=2346>note YHG=2345>records YHG=2354>our YHG=2345>observations " XBD=2504 XBD=2029 XBD=2136 XBD=2328 XBD=2404 XHG=1409 XHG=2048 XHG=2182 XHG=2345 XHG=2442 YBD=2420 YBD=2410 YBD=2411 YHG=2382>Cambridgeshire.-Bassingbourne YHG=2383>0-46. YHG=2382>Newton YHG=2382>0-4. YHG=2381>BotXBD=222 XHG=797 XBD=305 XBD=384 XBD=503 XBD=710 XBD=780 XBD=864 XBD=1132 XBD=1194 XBD=1302 XHG=97 XHG=241 XHG=324 XHG=403 XHG=523 XHG=729 XHG=884 XHG=1151 XHG=1209 YBD=2416 YBD=2423 YBD=2415 YBD=2415 YBD=2414 YHG=2385>which YHG=2395>are YHG=2385>far YHG=2386>from YHG=2386>complete YHG=2394>on YHG=2385>the YHG=2384>distribution YHG=2384>of YHG=2384>fluo" XBD=2506 XBD=1501 XBD=1615 XBD=1890 XBD=2005 XBD=2212 XBD=2321 XHG=1361 XHG=1528 XHG=1661 XHG=1918 XHG=2053 XHG=2238 XHG=2365 YBD=2458 YBD=2451 YBD=2450 YBD=2449 YHG=2422>tesham YHG=2423>0-32. YHG=2422>Haslingfield YHG=2423>0-22. YHG=2421>Shelford YHG=2422>0-17. YHG=2420>Fulbourn XBD=180 XHG=841 XBD=241 XBD=439 XBD=538 XBD=708 XBD=821 XBD=918 XBD=1044 XBD=1158 XBD=1302 XHG=99 XHG=199 XHG=262 XHG=460 XHG=557 XHG=744 XHG=938 XHG=1065 XHG=1176 YBD=2455 YBD=2461 YBD=2460 YBD=2454 YBD=2455 YBD=2454 YBD=2454 YHG=2426>rine YHG=2426>in YHG=2425>England YHG=2425>and YHG=2425>Wales YHG=2424>and YHG=2425>sets YHG=2424>forth YHG=2424>data; YHG=2424>which |>" " XBD=1452 XBD=1710 XBD=1803 XBD=1957 XBD=2201 XBD=2506 XBD=2292 XHG=1364 XHG=1499 XHG=1738 XHG=1851 XHG=1984 XHG=2335 XHG=2228 YBD=2489 YBD=2490 YBD=2496 YBD=2489 YHG=2462>0-17. YHG=2462>Teversham YHG=2462>0-1. YHG=2462>Great YHG=2461>Wilbraham YHG=2460>Barrington YHG=2461>0.1. XBD=191 XBD=252 XBD=390 XBD=445 XBD=588 XBD=687 XBD=794 XBD=849 XBD=941 XBD=1024 XBD=1301 XHG=99 XHG=203 XHG=265 XHG=403 XHG=461 XHG=601 XHG=700 XHG=808 XHG=863 XHG=954 XHG=1037 YBD=2502 YBD=2493 YBD=2494 YBD=2493 YBD=2493 YHG=2473>may YHG=2465>be YHG=2464>useful YHG=2465>others YHG=2465>who YHG=2464>wish YHG=2465>to YHG=2464>test YHG=2473>our YHG=2464>observations " XBD=2344 XBD=1429 XBD=1654 XBD=1701 XBD=1877 XBD=2029 XBD=2077 XBD=2301 XHG=1364 XHG=1446 XHG=1670 XHG=1748 XHG=1892 XHG=2045 XHG=2123 XHG=2316 YBD=2534 YBD=2530 YBD=2537 YBD=2538 YBD=2529 YHG=2501>0-1, YHG=2501>Chesterton YHG=2501>Cherry YHG=2501>Hinton YHG=2502>0. YHG=2501>Melbourn YHG=2501>0. XBD=143 XHG=710 XBD=303 XBD=387 XBD=626 XBD=694 XBD=776 XBD=1042 XBD=1136 XBD=1301 XHG=100 XHG=161 XHG=320 XHG=404 XHG=643 XHG=794YBD=2533 XHG=1059 XHG=1155 YBD=2534 YBD=2536 YBD=2541 YBD=2534 YBD=2533 YHG=2513>or YHG=2504>extend YHG=2504>knowledge YHG=2513>on YHG=2504>the YHG=2504>distribution YHG=2504>and YHG=2503>clinical " XBD=1302 XBD=297 XBD=353 XBD=535 XBD=732 XBD=863 XBD=969 XBD=1049 XBD=1183 XHG=102 XHG=310 XHG=363 XHG=548 XHG=784 XHG=981 XHG=1062 XHG=1196 YBD=2574 YBD=2573 YBD=2573 YBD=2574 YBD=2572 YHG=2543>detection YHG=2544>of YHG=2544>endemic YHG=2543>fluorosis. YHG=2544>The YHG=2543>data YHG=2543>fall YHG=2543>under YHG=2543>three XBD=1811XHG=876 XBD=1937 XBD=2219 XBD=2322 XBD=2504 XHG=1409 XHG=1850 XHG=1995 XHG=2256 XHG=2354 YBD=2578 YBD=2570 YBD=2571 YBD=2569 YHG=2540>Derbyshire.-Glossop YHG=2541>0-22. YHG=2534>Chesterfield YHG=2540>and YHG=2539>Bolsover: " XBD=2241 XBD=1583 XBD=1686 XBD=1800 XBD=1969 XBD=2107 XHG=1363 XHG=1596 XHG=1703 XHG=1825 XHG=1984 XHG=2123 YBD=2618 YBD=2615 YBD=2610 YBD=2619 YHG=2580>Whispering YHG=2581>Well YHG=2581>0-35 YHG=2580>Linacre YHG=2581>Water YHG=2581>0-33. ; ; XBD=310 XHG=760 XBD=416 XBD=676 XBD=741 XBD=826 XBD=1054 XBD=1303 XHG=101 XHG=349 XHG=439 XHG=697 XHG=850YBD=2613 XHG=1076 YBD=2620 YBD=2620 YBD=2613 YHG=2582>headings YHG=2583>recognition YHG=2583>of YHG=2583>the YHG=2583>geological YHG=2583>formations " XBD=1896 |>" XBD=1805 XBD=2000 XBD=2254 XHG=1410 XHG=1820 XHG=1913 XHG=2247 YBD=2657 YBD=2649 YBD=2641 YHG=2620>Devonshire.-Woody YHG=2622>Bay YHG=2621>0-33. YHG=2639>XBD=196 XBD=338 XBD=513 XBD=560 XBD=802 XBD=886 XBD=1052 XBD=1317 XHG=102 XHG=212 XHG=353 XHG=530 XHG=578 XHG=820 XHG=904 XHG=1068 YBD=2653 YBD=2658 YBD=2652 YBD=2652 YBD=2661 YHG=2622>with YHG=2623>which YHG=2622>fluorine YHG=2623>is YHG=2623>associated, YHG=2623>the YHG=2623>clinical YHG=2622>recognition " XBD=2505 XBD=1978 XBD=2262 XBD=2358 XHG=1412 XHG=2151 XHG=2298 XHG=2399 YBD=2696 YBD=2687 YBD=2686 YHG=2659>Glamorganshire.-Pontypridd YHG=2660>Barry YHG=2659>0-2. YHG=2658>Rhoase XBD=147 XHG=882 XBD=231 XBD=372 XBD=438 XBD=615 XBD=862 XBD=924 XBD=1141 XBD=1216 XBD=1317 XHG=103 XHG=165 XHG=253 XHG=395 XHG=456 XHG=637 XHG=946YBD=2692 XHG=1162 XHG=1237 YBD=2691 YBD=2700 YBD=2692 YBD=2699 YBD=2691 YHG=2661>the YHG=2662>result YHG=2662>of YHG=2662>fluorine YHG=2663>absorption YHG=2671>as YHG=2662>indicated YHG=2663>by YHG=2658>the

0-25.

" XBD=2508 XBD=1432 XBD=1676 XBD=1781 XBD=2015 XBD=2099 XBD=2305 XHG=1367 XHG=1479 XHG=1694 XHG=1827 XHG=2033 XHG=2145 XHG=2321 XHG=2409 YBD=2727 YBD=2726 YHG=2699>0-2. YHG=2698>Porthcawl YHG=2700>0-15. YHG=2699>Aberthaw YHG=2699>Laleston YHG=2699>0-1. YHG=2692>Cardiff " XBD=2380 XBD=286 XHG=585 XBD=367 XBD=547 XBD=718 XBD=913 XBD=1030 XBD=1199 XBD=1304 XHG=755 XHG=104 XHG=324 XHG=401 XHG=953YBD=2737 XHG=1067 XHG=1238 YBD=2738 YBD=2731 YBD=2732 YBD=2731 YBD=2738 YBD=2731 YHG=2701>mottling YHG=2702>of YHG=2702>human YHG=2701>dental YHG=2702>enamel, YHG=2702>and YHG=2702>finally YHG=2702>the

" XBD=1989 XBD=1446 XBD=1494 XBD=1698 XBD=1818 XBD=1939 XHG=1366 XHG=1464 XHG=1541 XHG=1715 XHG=1833 XHG=1957 YBD=2766 YBD=2774 YBD=2773 YBD=2767 YHG=2737>City YHG=2738>Ewenny YHG=2738>(river YHG=2739>Alun) YHG=2739>0. XBD=288 XHG=855 XBD=606 XBD=666 XBD=838 XBD=895 XBD=1237 XHG=105 XHG=307 XHG=623 XHG=679 XHG=914YBD=2771 YBD=2770 YBD=2772 YBD=2778 YHG=2740>chemical YHG=2741>determination YHG=2741>of YHG=2741>fluorine YHG=2742>in YHG=2741>drinking-water. " XBD=1851 XBD=1948 XBD=2053 XBD=2229 XBD=2503 XHG=1411 XHG=1869 XHG=1965 XHG=2100 XHG=2382 YBD=2813 YBD=2806 YBD=2807 YHG=2777>Lancashire.-Rochdale YHG=2777>City YHG=2778>0-24. YHG=2778>Bolton YHG=2775>Salford: " XBD=975 XBD=691 XHG=716 XHG=441 YBD=2835 YBD=2834 YHG=2812>INDICATIONS YHG=2811>GEOLOGICAL |>" " XBD=1526 XBD=1644 XBD=1910 XBD=2042 XBD=2089 XBD=1732 XHG=1367 XHG=1542 XHG=1756 XHG=1928 XHG=2059 XHG=1659 YBD=2854 YBD=2846 YBD=2845 YBD=2850 YHG=2817>Durham YHG=2817>Road YHG=2818>Regents YHG=2818>Street YHG=2818>0. YHG=2818>0-3; " XBD=1155 |>" XBD=363 XBD=556 XBD=855 XBD=980 XBD=1094 XBD=1308 XHG=158 XHG=387 XHG=570 XHG=874 XHG=1001 XHG=1114 XHG=1176 YBD=2888 YBD=2890 YBD=2884 YBD=2884 YBD=2891 YHG=2852>Fluorspar YHG=2852>(calcium YHG=2854>fluoride).-In YHG=2864>areas YHG=2854>such YHG=2863>as YHG=2854>Hopper XBD=1865 XBD=1967 XBD=2122 XBD=2226 XHG=1412 XHG=1881 XHG=1983 XHG=2139 YBD=2883 YBD=2892 YBD=2885 YHG=2855>Lincolnshire.-Partney, YHG=2865>near YHG=2856>Spilsby YHG=2857>0-63. XBD=1551XHG=757 XBD=1834 XBD=1974 XBD=2114 XBD=2422 XBD=2505 XHG=1412 XHG=1581 XHG=1865 XHG=2001 XHG=2140 XHG=2444 YBD=2922 YHG=2895>London YHG=2895>(Metropolitan YHG=2895>Water YHG=2896>Board YHG=2894>area).-Filtered YHG=2894>New " XBD=1307 XBD=320 XBD=531 XBD=738 XBD=789 XBD=1011 XBD=1108 XBD=1197 XHG=108 XHG=344 XHG=551 XHG=809 XHG=1030 XHG=1128 XHG=1218 YBD=2927 YBD=2928 YBD=2931 YBD=2924 YBD=2923 YBD=2923 YBD=2930 YHG=2893>Weardale, YHG=2892>Durham, YHG=2893>fluorspar YHG=2894>is YHG=2894>abundant YHG=2893>and YHG=2894>has YHG=2894>long

041.

|>" " XBD=1782 XBD=1866 XBD=1971 XBD=2173 XBD=2331 XBD=1580 XHG=1627 XHG=1796 XHG=1883 XHG=2019 XHG=2187 XHG=2345 XHG=1368 YBD=2963 YBD=2962 YBD=2962 YHG=2935>Lea YHG=2934>0-15. YHG=2934>Filtered YHG=2934>Thames YHG=2935>0-1. YHG=2934>River 0-35. " XBD=2403 XBD=206 XBD=395 XBD=608 XBD=697 XBD=917 XBD=984 XBD=1069 XBD=1253 XBD=1307 XHG=108 XHG=229 XHG=448 XHG=631 XHG=721 XHG=940 XHG=1003 XHG=1092 XHG=1275 YBD=2969 YBD=2962 YBD=2970 YBD=2963 YBD=2963 YBD=2962 YHG=2932>been YHG=2932>worked. YHG=2931>Though YHG=2933>the YHG=2933>solubility YHG=2933>of YHG=2933>the YHG=2933>mineral YHG=2932>is

XBD=192 XHG=802 XBD=455 XBD=685 XBD=783 XBD=902 XBD=1002 XBD=1099 XBD=1307 XHG=108 XHG=213 XHG=475 XHG=703 XHG=917YBD=3002 XHG=1016 XHG=1115 YBD=3009 YBD=3008 YBD=3001 YBD=3009 YBD=3009YHG=2973>their YHG=2972>low, YHG=2971>appreciable YHG=2971>quantities YHG=2972>find YHG=2982>way YHG=2963>into YHG=2972>drinking" XBD=2503 XBD=1948 XBD=2159 XBD=2265 XBD=2423 XHG=1885 XHG=1995 XHG=2179 XHG=2308 XHG=2439 YBD=3002 YBD=3001 YHG=2974>1-2. YHG=2973>Launton YHG=2974>0-84. YHG=2973>Thame YHG=2972>0-46. Oxfordshire.-Bampton XBD=1479 XBD=1659 XBD=1771 XBD=2192 XHG=1368 XHG=1501 XHG=1684 XHG=1817 XHG=2246 YBD=3039 YBD=3040 YBD=3041 YBD=3049 YHG=3012>Black YHG=3013>Bourton YHG=3013>0-46. YHG=3012>Hook YHG=3011>Kirtlmgton Norton 0-44. " XBD=2438 XBD=241 XHG=836 XBD=374 XBD=554 XBD=613 XBD=746 XBD=822 XBD=955 XBD=1066 XBD=1308 XHG=109 XHG=256 XHG=388 XHG=569 XHG=622 XHG=759 XHG=966YBD=3042 XHG=1079 YBD=3047 YBD=3048 YBD=3050 YBD=3040 YBD=3041 YBD=3041 YHG=3011>water, YHG=3020>many YHG=3010>supplies YHG=3011>of YHG=3010>which YHG=3020>are YHG=3012>taken YHG=3012>from YHG=3011>abandoned " XBD=188 XBD=358 XBD=499 XBD=559 XBD=702 XBD=786 XBD=964 XBD=1126 XHG=110 XHG=207 XHG=377 XHG=518 XHG=577 XHG=720 XHG=984 XHG=1177 YBD=3079 YBD=3080 YBD=3081 YBD=3081 YBD=3080 YHG=3050>and YHG=3050>flooded YHG=3050>mines YHG=3050>in YHG=3049>which YHG=3050>the YHG=3051>mineral YHG=3059>occurs. YHG=3050>Fluor" XBD=1308 XBD=1469XHG=804 XBD=1634 XBD=1729 XBD=1928 XBD=2133 XBD=2248 XBD=2417 XBD=2502 XHG=1368 XHG=1498 XHG=1663 XHG=1776 XHG=1956 XHG=2162 XHG=2291 XHG=2439 YBD=3079 YBD=3081 YBD=3089 YBD=3080 YHG=3051>Brize YHG=3052>Norton YHG=3052>0-4. YHG=3051>Stanton YHG=3051>Harcourt YHG=3052>0-39. YHG=3052>Witney YHG=3051>0-37. 0-33. XBD=201 XHG=916 XBD=256 XBD=435 XBD=498 XBD=588 XBD=780 XBD=892 XBD=959 XBD=1208 XBD=1310 XHG=111 XHG=223 XHG=279 XHG=457 XHG=522 XHG=611 XHG=804 XHG=979YBD=3120 XHG=1232 YBD=3121 YBD=3128 YBD=3119 YBD=3121 YHG=3099>spar YHG=3091>is YHG=3090>present YHG=3089>in YHG=3089>the YHG=3089>Pennine YHG=3099>area YHG=3091>of YHG=3090>Lancashire YHG=3090>and " XBD=2501 XBD=1521 XBD=1823 XBD=1966 XBD=2084 XBD=2415 XHG=1369 XHG=1687 XHG=1852 XHG=1996 XHG=2130 XHG=2439 YBD=3127 YBD=3118 YBD=3119 YBD=3129 YBD=3120 YHG=3090>Cumnor YHG=3090>Steeple YHG=3090>Aston YHG=3092>0-32. YHG=3091>Aston-Bampton YHG=3090>0-32. " XBD=1311 XBD=332 XBD=527 XBD=692 XBD=800 XBD=1034 XBD=1232 XHG=111 XHG=384 XHG=569 XHG=840 XHG=1072 XHG=1268 YBD=3161 YBD=3164 YBD=3159 YBD=3160 YBD=3160 YBD=3158 YHG=3129>Yorkshire. YHG=3129>Sutton YHG=3129>(1936) YHG=3129>has YHG=3129>described YHG=3130>fluorine YHG=3130>in XBD=1541XHG=730 XBD=1641 XBD=1841 XBD=1963 XBD=2217 XBD=2333 XBD=2503 XHG=1370 XHG=1577 XHG=1690 XHG=1876 XHG=2010 XHG=2252 XHG=2374 YBD=3157 YBD=3167 YBD=3159 YHG=3130>Swerford YHG=3131>0-3. YHG=3130>Chinnor YHG=3130>0-28. YHG=3130>Kidlington YHG=3131>0-26. YHG=3131>Shirburn " XBD=2502 XBD=259 XHG=727 XBD=506 XBD=657 XBD=713 XBD=939 XBD=1048 XBD=1258 XHG=112 XHG=275 XHG=520 XHG=672 XHG=952YBD=3198 XHG=1061 YBD=3199 YBD=3206 YBD=3197 YBD=3198 YHG=3169>certain YHG=3169>Derbyshire YHG=3169>waters YHG=3168>in YHG=3169>with YHG=3169>fluorspar.0-24. XBD=1459 XBD=1746 XBD=1857 XBD=2063 XBD=2359 XHG=1371 XHG=1506 XHG=1770 XHG=1903 XHG=2087 XHG=2398 YBD=3204YHG=3169>connexion YBD=3197 YBD=3205 YBD=3198 YBD=3208 YHG=3169>0-26. YHG=3167>Hanborough YHG=3169>0-24. YHG=3169>Hinksey YHG=3166>Reservoir YHG=3168>Sibford |>" XBD=510 XBD=313 XHG=339 XHG=162 YBD=3243 YHG=3208>(calcium YHG=3208>Apatite " XBD=1113 XBD=1248 XBD=1313 XBD=1459 XBD=1697 XBD=1805 XBD=2023 XBD=2178 XBD=2281 XBD=2501 XHG=969 XHG=1142 XHG=1271 XHG=1372 XHG=1507 XHG=1717 XHG=1851 XHG=2042 XHG=2197 XHG=2324 YBD=3237 YBD=3235 YBD=3244 YBD=3236 YBD=3237 YBD=3245 M0-posp7mcoastal YHG=3217>areas YHG=3207>of YHG=3208>0-24. YHG=3207>Standlake YHG=3207>0-23. YHG=3207>Chipping YHG=3208>Norton YHG=3209>0-22. YHG=3201>Headington XBD=247 XHG=783 XBD=432 XBD=542 XBD=749 XBD=907 XBD=1008 XBD=1310 XHG=114 XHG=283 XHG=464 XHG=576 XHG=941YBD=3276 XHG=1041 YBD=3277 YBD=3283 YBD=3276 YBD=3283 YHG=3246>Essex, YHG=3247>Suffolk YHG=3247>and YHG=3246>Norfolk, YHG=3246>where YHG=3247>the YHG=3246>underground " XBD=2500 XBD=1508 XBD=1618 XBD=1853 XBD=1962 XBD=2146 XBD=2297 XBD=2393 XHG=1372 XHG=1530 XHG=1663 XHG=1875 XHG=2009 XHG=2167 XHG=2317 XHG=2430 YBD=3282 YBD=3274 YBD=3284 YBD=3276 YBD=3277 YHG=3246>Quarry YHG=3246>0-17. YHG=3246>Hardwick YHG=3247>0-17. YHG=3247>Steeple YHG=3248>Barton YHG=3248>0-17. YHG=3248>Clan" XBD=2499 XBD=1452 XBD=1563 XBD=1786 XBD=1895 XBD=2156 XBD=2264 XHG=1371 XHG=1475 XHG=1609 XHG=1808 XHG=1944 XHG=2179 XHG=2438 YBD=3320 YBD=3313 YBD=3314 YBD=3315 YHG=3286>field YHG=3285>0-17. YHG=3285>Langford YHG=3286>0-17. YHG=3286>Northmoor YHG=3287>0-17. YHG=3288>0-17. XBD=251 XHG=764 XBD=436 XBD=512 XBD=741 XBD=858 XBD=1043 XBD=1112 XBD=1309 XHG=113 XHG=278 XHG=460 XHG=536 XHG=882YBD=3323 XHG=1069 XHG=1134 YBD=3316 YBD=3317 YBD=3315 YBD=3316 YHG=3286>waters YHG=3287>contain YHG=3296>an YHG=3286>unusually YHG=3286>high YHG=3286>amount YHG=3286>of YHG=3295>common " XBD=1309 XBD=1621XHG=890 XBD=1753 XBD=1951 XBD=2083 XBD=2263 XBD=2404 XBD=2498 XBD=200 XBD=299 XBD=441 XBD=553 XBD=638 XBD=813 XBD=872 XBD=956 XBD=1073 XBD=1135 XHG=113 XHG=221 XHG=317 XHG=459 XHG=572 XHG=656 XHG=832 XHG=1372 XHG=1664 XHG=1799 XHG=1995 XHG=2130 XHG=2302 XHG=2437 XHG=973 XHG=1092 XHG=1150 YBD=3360 YBD=3356 YBD=3355 YBD=3354 YBD=3354 YBD=3359 YBD=3352 YBD=3353 YBD=3354 YBD=3355 YBD=3361 YHG=3326>salt, YHG=3325>this YHG=3326>reacts YHG=3326>with YHG=3326>the YHG=3325>fluorine YHG=3325>in YHG=3325>the YHG=3325>form YHG=3324>Bletchington YHG=3324>Burford YHG=3325>0-15. YHG=3324>Cowley YHG=3325>Marsh YHG=3326>0-15. YHG=3325>of YHG=3325>apatite, " XBD=2499 XBD=1611 XBD=1736 XBD=1922 XBD=2230 XBD=2345 XHG=1373 XHG=1648 XHG=1783 XHG=2096 XHG=2265 XHG=2385 YBD=3398 YBD=3390 YBD=3391 YBD=3394 YBD=3393 YHG=3363>Ducklington YHG=3363>0-14. YHG=3363>Benson YHG=3363>Salford YHG=3365>0-14. YHG=3365>Enstone XBD=191 XHG=770 XBD=281 XBD=464 XBD=685 XBD=751 XBD=920 XBD=1100 XBD=1311 XHG=113 XHG=214 XHG=304 XHG=487 XHG=708 XHG=941YBD=3393 XHG=1124 YBD=3402 YBD=3394 YBD=3393 YHG=3364>and YHG=3364>the YHG=3364>relative YHG=3365>solubility YHG=3364>of YHG=3364>sodium YHG=3363>fluoride YHG=3364>therefore " XBD=2497 XBD=1461 XBD=1616 XBD=1840 XBD=1933 XBD=2149 XBD=2206 XBD=2353 XBD=2458 XHG=1374 XHG=1509 XHG=1642 XHG=1866 XHG=1980 XHG=2175 XHG=2252 XHG=2376 XHG=2477 YBD=3437 YBD=3430 YBD=3429 YBD=3439 YBD=3431 YHG=3402>0.13. YHG=3401>Little YHG=3400>Faringdon YHG=3402>0-1. YHG=3402>Lewknor YHG=3402>0. YHG=3402>South YHG=3403>Leigh YHG=3404>0. XBD=218 XHG=880 XBD=308 XBD=367 XBD=408 XBD=517 XBD=690 XBD=866 XBD=922 XBD=1004 XBD=1150 XBD=1311 XHG=114 XHG=235 XHG=325 XHG=384 XHG=424 XHG=532 XHG=708 XHG=937YBD=3431 XHG=1020 XHG=1201 YBD=3440 YBD=3433 YBD=3431 YBD=3432 YHG=3403>gives YHG=3403>rise YHG=3403>to YHG=3413>a YHG=3403>high YHG=3403>fluorine YHG=3403>content YHG=3402>in YHG=3402>the YHG=3403>water. YHG=3403>AinsXBD=238 XHG=900 XBD=374 XBD=469 XBD=630 XBD=684 XBD=885 XBD=942 XBD=1112 XBD=1164 XBD=1311 XHG=113 XHG=250 XHG=384 XHG=477 XHG=643 XHG=697 XHG=955YBD=3471 XHG=1124 XHG=1178 YBD=3473 YBD=3472 YBD=3479 YBD=3470 YBD=3471 YHG=3442>worth YHG=3442>(1933) YHG=3443>first YHG=3443>showed YHG=3443>in YHG=3442>England, YHG=3442>at YHG=3441>Maldon YHG=3441>in YHG=3441>Essex, " XBD=2496 XBD=1554 XBD=1608 XBD=1831 XBD=1884 XBD=2066 XBD=2168 XBD=2333 XBD=2461 XHG=1374 XHG=1578 XHG=1655 XHG=1854 XHG=1933 XHG=2089 XHG=2191 XHG=2351 XHG=2476 YBD=3468 YBD=3476 YBD=3477 YBD=3479 YBD=3470 YHG=3441>Eynsham YHG=3439>Fulbrook YHG=3441>0. YHG=3440>Oxford YHG=3440>City YHG=3441>(present YHG=3441>supply) YHG=3443>0. 0 44. " XBD=1582 XHG=1372 YBD=3516 YHG=3480>Adderbury XBD=181 XHG=837 XBD=447 XBD=637 XBD=815 XBD=877 XBD=1012 XBD=1111 XBD=1314 XHG=113 XHG=197 XHG=465 XHG=658 XHG=890YBD=3511 XHG=1032 XHG=1131 YBD=3518 YBD=3512 YBD=3511 YBD=3509 YHG=3482>the YHG=3481>relationship YHG=3481>between YHG=3482>fluorine YHG=3481>in YHG=3480>water YHG=3479>and YHG=3480>mottling

0-4.

BFilkins 014.

" " " " "

491

XBD=2580 XBD=2146 XBD=2352 XBD=2488 XBD=1952 XBD=2006 XBD=2249 XBD=2361 XBD=2579 XBD=1979 XBD=2123 XBD=2581 XBD=1953 XBD=2046 XBD=2228 XBD=2364 XBD=2581 XBD=1979 XBD=2035 XBD=2078 XBD=2180 XBD=2242 XBD=2581

XHG=2531 XHG=1882 XHG=2192 XHG=2395 XHG=1831 XHG=1966 XHG=2019 XHG=2265 XHG=2379 XHG=1831 XHG=2046 XHG=2191 XHG=1831 XHG=1969 XHG=2060 XHG=2248 XHG=2415 XHG=1832 XHG=1993 XHG=2054 XHG=2096 XHG=2199 XHG=2259

YBD=222 YBD=229 YBD=260 YBD=268 YBD=306 YBD=298 YBD=307 YBD=343 YBD=337 YBD=345 YBD=338 YBD=383 YBD=376 YBD=378

YHG=192>be YHG=191>Geologically, YHG=191>fluorine YHG=201>may YHG=230>found YHG=230>in YHG=231>association YHG=231>with YHG=231>fluorspar, YHG=269>apatite YHG=269>and YHG=269>phosphate-bearing YHG=308>rocks, YHG=307>and YHG=307>Jurassic YHG=308>clays. YHG=308>Mottled YHG=347>enamel fluorosis YHG=355>as YHG=356>a YHG=346>sign YHG=346>of YHG=346>dental

" XBD=2581 XBD=1904 XHG=2421 XBD=1970 XBD=2080 XBD=2141 XBD=2211 XBD=2344 XBD=2407 XHG=1832 YBD=416 XHG=1922 XHG=1987 XHG=2099 XHG=2159 XHG=2228 XHG=2363 YBD=415 YHG=386>fluorine YHG=395>can YHG=378>be YHG=385>used YHG=394>as YHG=395>an YHG=385>index YHG=386>of

" " " " "

XBD=2580 XBD=2074 XBD=2233 XBD=2329 XBD=1876 XBD=1953 XBD=2084 XBD=2261 XBD=2416 XBD=2481 XBD=2612 XBD=2039 XBD=2217 XBD=2334 XBD=2406 XBD=2581 XBD=2116 XBD=2202 XBD=2421 XBD=2580 XBD=2021 XBD=2245 XBD=2296 XBD=2375 XBD=2580

XHG=2348 XHG=1831 XHG=2114 XHG=2253 XHG=1833 XHG=1887 XHG=1968 XHG=2103 XHG=2283 XHG=2438 XHG=2501 XHG=1832 XHG=2061 XHG=2241 XHG=2358 XHG=2431 XHG=1832 XHG=2148 XHG=2238 XHG=2458 XHG=1831 XHG=2035 XHG=2256 XHG=2308 XHG=2386

YBD=463 YBD=455 YBD=454 YBD=494 YBD=493 YBD=501 YBD=541 YBD=540 YBD=532 YBD=572 YBD=579 YBD=571 YBD=611 YBD=612 YBD=610 YBD=618

YHG=425>indications YHG=426>absorption.’ YHG=425>These YHG=425>two YHG=465>of YHG=465>the YHG=464>likely YHG=464>fluorine YHG=463>intake YHG=464>in YHG=473>any YHG=503>particular YHG=503>locality YHG=511>may YHG=502>be YHG=503>further YHG=542>substantiated YHG=542>by YHG=541>chemical YHG=541>deterYHG=582>mination YHG=580>of YHG=581>in YHG=581>the YHG=580>drinkingfluorine

" XBD=1960 XHG=1831 YBD=650 YHG=620>water. " XBD=2581 XBD=1939 XHG=2326 XBD=2061 XBD=2136 XBD=2285 XBD=2388 XHG=2431 YBD=694 XHG=1877 XHG=1976 XHG=2097 XHG=2171 YBD=695 YHG=666>the YHG=665>Medical YHG=667>We YHG=666>wish YHG=669>to YHG=667>thank

" XBD=2408 XBD=2580 XHG=2426 XBD=2006 XBD=2167 XBD=2244 XBD=2286 XHG=1832 YBD=742 XHG=2026 XHG=2190 XHG=2265 XHG=2305 YBD=733 YHG=705>towards YBD=734 YHG=706>Research YHG=705>Council YHG=706>for YHG=714>a YHG=708>grant " XBD=2580 XBD=1893 XHG=2238 XBD=2078 XBD=2139 XBD=2219 XBD=2489 XHG=2508 YBD=773 XHG=1832 XHG=1913 XHG=2100 XHG=2157 YBD=772 YHG=745>investigation YBD=781 YHG=745>and YHG=744>the YHG=753>expenses YHG=745>of YHG=745>the " XBD=2581 XBD=1915 XHG=2445 XBD=1977 XBD=2039 XBD=2182 XBD=2290 XBD=2352 XBD=2426 XHG=1832 YBD=812 XHG=1935 XHG=1997 XHG=2059 XHG=2203 XHG=2311 XHG=2364 YBD=811 YHG=784>Oxford YBD=817 YHG=783>Miss YHG=784>E. YHG=784>B. YHG=783>Cheek, YHG=784>BSc, YHG=784>of YHG=784>the

" XBD=2580 XBD=2014 XHG=2517 XBD=2188 XBD=2268 XBD=2427 XBD=2493 XHG=1832 YBD=851 XHG=2044 XHG=2215 XHG=2294 XHG=2453 YBD=850 YHG=823>the YBD=859 YHG=822>Nutrition YHG=822>Survey, YHG=823>for YHG=823>certain YHG=823>of " XBD=2296 XBD=1977 XHG=1998 XHG=1832 YBD=890 YBD=889 YHG=861>determinations. YHG=861>fluorine

" XBD=2580 XBD=1914 XHG=2517 XBD=1975 XBD=2033 XBD=2083 XBD=2316 XBD=2419 XBD=2497 XHG=1879 YBD=929 XHG=1930 XHG=1990 XHG=2055 XHG=2104 XHG=2336 XHG=2442 YBD=928 YHG=900>the YBD=937 YHG=900>C. YHG=901>N. YHG=900>B. YHG=900>is YHG=901>responsible YHG=901>only YHG=901>for

" XBD=2319 XBD=2579 XHG=2328 XBD=2019 XBD=2174 XBD=2256 XHG=1832 YBD=974 XHG=2028 XHG=2185 XHG=2264 YBD=976 YHG=940>contribution, YBD=975 YBD=967 YBD=968 YHG=937>geological YHG=941>aspects, YHG=939>and YHG=939>his " XBD=2579 XBD=2010 XHG=2314 XBD=2100 XBD=2225 XBD=2284 XBD=2501 XHG=2530 YBD=1016 XHG=1832 XHG=2038 XHG=2130 XHG=2256 YBD=1006 YHG=979>by YBD=1015 YHG=978>including YHG=978>the YHG=987>map, YHG=978>is YHG=978>published " XBD=2580 XBD=2037 XHG=2505 XBD=2112 XBD=2203 XBD=2400 XBD=2474 XHG=1832 YBD=1046 XHG=2072 XHG=2141 XHG=2238 XHG=2434 YBD=1055 YHG=1018>HM YBD=1045 YHG=1017>permission YHG=1017>the YHG=1017>Director YHG=1017>of " XBD=2196 XBD=2029 XHG=2050 XHG=1833 YBD=1093 YHG=1057>Survey. YHG=1057>Geological REFERENCES

Ainsworth, N. J. (1933) Brit. dent. J. 55, 233. Bromehead, C. N. (1941) Lancet, i, 673. Day, C. D. M. (1940) Brit. dent. J. 68, 408. Dean, H. T. (1938) Bull. Off. int. Hyg.publ. 30, 1294. Arnold, F. A. jun., and Elvove, E. (1942) Publ. Hlth Rep., Wash. 57, 1155. Glock, G. E., Lowater, F. and Murray, M. M. (1941) Biochem. J. 35, 1235. Metropolitan Water Board (1936) Rep. Metrop. Wat. Supp. 1935. Spira, L. (1942) Brit. dent. J. 73, 149. Sutton, R. W. (1936) Derby County Council Annual Report. —

New Inventions WRISTLET TO INTEREST Pannettand

" XBD=2575 XBD=1701 XHG=2478 XBD=1868 XBD=1941 XBD=1997 XBD=2191 XBD=2295 XBD=2456 XHG=1660 YBD=1782 XHG=1734 XHG=1899 XHG=1974 XHG=2029 XHG=2222 XHG=2325 YBD=1781 YHG=1752>been YBD=1790 YBD=1783 YBD=1789 YHG=1752>in YHG=1752>cotton YHG=1761>as YHG=1762>a YHG=1753>ligature YHG=1753>has YHG=1752>lately

" XBD=2575 XBD=1535 XHG=2551 XBD=1612 XBD=2081 XBD=2181 XBD=2225 XBD=2348 XBD=2527 XHG=1378 YBD=1821 XHG=1557 XHG=1955 XHG=2105 XHG=2206 XHG=2248 XHG=2372 YBD=1828 YHG=1801>a YBD=1822 YHG=1791>revived YHG=1791>by YHG=1792>others YHG=1792>and YHG=1792>I YHG=1792>have YHG=1791>devised

" XBD=2417 XBD=2574 XHG=2438 XBD=1490 XBD=1667 XBD=1744 XBD=1918 XBD=1960 XBD=2084 XBD=2147 XBD=2306 XHG=1379 YBD=1861 XHG=1507 XHG=1683 XHG=1761 XHG=1936 XHG=1977 XHG=2103 XHG=2161 XHG=2357 YBD=1867 YHG=1831>originYBD=1868 YBD=1860 YHG=1830>small YHG=1830>wristlet YHG=1830>for YHG=1829>holding YHG=1840>a YHG=1831>spool YHG=1831>of YHG=1832>cotton. YHG=1831>No " XBD=2575 XBD=1476 XHG=2264 XBD=1531 XBD=1716 XBD=1801 XBD=1925 XBD=2030 XBD=2139 XBD=2239 XBD=2468 XHG=2489 YBD=1900 XHG=1378 XHG=1498 XHG=1556 XHG=1739 XHG=1822 XHG=1964 XHG=2053 XHG=2162 YBD=1906 YHG=1870>originally YBD=1905 YBD=1899 YBD=1907 YHG=1870>bor- ; YHG=1869>ality YHG=1869>is YHG=1869>claimed YHG=1869>for YHG=1869>this YHG=1870>the YHG=1871>idea YHG=1879>was " """ " "

XBD=2574 XHG=2463 XBD=1504 XBD=1625 XBD=1779 XBD=1992 XBD=2184 XBD=2345 XBD=2449 XHG=1378 YBD=1939 XHG=1525 XHG=1646 XHG=1800 XHG=2014 XHG=2242 XHG=2366 YBD=1937 YHG=1909>-howYBD=1945 YBD=1938 YBD=1943 YHG=1908>rowed YHG=1908>from YHG=1908>Victor YHG=1908>Bonney’s YHG=1908>wristlet. YHG=1909>Mine YHG=1910>has, XBD=1479 XBD=1645 XBD=1954 XBD=2014 XBD=2121 XBD=2173 XBD=2224 XBD=2410 XBD=2576 XHG=1379 XHG=1500 XHG=1663 XHG=1974 XHG=2033 XHG=2139 XHG=2193 XHG=2247 XHG=2436 YBD=1981 YBD=1976 YBD=1977 YBD=1982 YBD=1984 YHG=1956>ever, YHG=1947>certain YHG=1946>modifications, YHG=1947>in YHG=1948>that YHG=1948>it YHG=1948>is YHG=1948>smaller, YHG=1948>lighter Son-&erset.-Timberscombe XBD=783 XBD=937 XBD=1015 XBD=1200 XBD=1312 XHG=696 XHG=831 XHG=963 XHG=1044 XHG=1226 YBD=1988 YBD=1989 YBD=1989 YBD=1998 YBD=1990 YHG=1960>0-45. YHG=1960>Stoke YHG=1961>StYHG=1961>Gregory YHG=1961>0-35XBD=1456XHG=862 XBD=1608 XBD=1647 XBD=1809 XBD=1955 XBD=2013 XBD=2195 XBD=2326 XBD=2576 XHG=1378 XHG=1472 XHG=1623 XHG=1662 XHG=1823 XHG=1970 XHG=2022 XHG=2247 XHG=2340 YBD=2014 YBD=2022 YBD=2015 YBD=2023 YBD=2016 YHG=1986>and YHG=1986>carries YHG=1994>a YHG=1986>greater YHG=1986>length YHG=1986>of YHG=1986>ligature. YHG=1987>The YHG=1987>illustration XBD=337 XBD=423 XBD=599 XBD=672 XBD=841 XBD=950 XBD=1064 XBD=1203 XBD=1314 XHG=135 XHG=358 XHG=471 XHG=620 XHG=692 XHG=997 XHG=1079 XHG=1226 YBD=2026 YBD=2027 YBD=2028 YBD=2029 YBD=2029 YHG=1995>Wambrook YHG=1999>0-3. YHG=1999>Creech YHG=1999>St. YHG=1998>Michael YHG=2000>0-25. YHG=2000>Old YHG=2000>Cleave YHG=2001>0-25. XBD=1410 XBD=1779 XHG=1378 XHG=1428 YBD=2054 YBD=2062 YHG=2025>is YHG=2024>self-explanatory. XBD=225 XHG=806 XBD=397 XBD=520 XBD=772 XBD=857 XBD=1002 XBD=1114 XBD=1314 XHG=136 XHG=270 XHG=432 XHG=587 XHG=901YBD=2067 XHG=1048 XHG=1186 YBD=2073 YBD=2066 YBD=2075 YBD=2068YHG=2038>St. YHG=2035>Long YHG=2037>Sutton YHG=2039>0-25. YHG=2038>Buckland YHG=2038>Mary YHG=2040>0-2. YHG=2039>Combe

XBD=180 XHG=771 XBD=370 XBD=499 XBD=733 XBD=957 XBD=1083 XBD=1315 XHG=135 XHG=210 XHG=411 XHG=567 XHG=996YBD=2105 XHG=1149 YBD=2104 YBD=2106 YBD=2108 YBD=2107 YHG=2075>St. YHG=2076>Nicholas YHG=2078>0-15. YHG=2077>Charlton YHG=2078>Mackerell YHG=2079>0-15. YHG=2079>Charlton " XBD=2574 XBD=1479 XBD=1667 XBD=1793 XBD=1964 XBD=2288 XBD=2411 XBD=2465 XHG=1422 XHG=1502 XHG=1690 XHG=1814 XHG=1986 XHG=2312 XHG=2434 XHG=2487 YBD=2112 YBD=2111 YBD=2113 YBD=2103 YHG=2074>An YHG=2074>ordinary YHG=2075>small YHG=2074>Singer’s YHG=2075>sewing-machine YHG=2076>spool YHG=2076>is YHG=2075>used |>" " XBD=239 XBD=318 XBD=577 XBD=888 XBD=935 XBD=659 XHG=134 XHG=255 XHG=365 XHG=705 XHG=904 XHG=593 YBD=2145 YBD=2144 YBD=2146 YBD=2145 YHG=2115>Adam YHG=2116>0-1. YHG=2117>Roadwater YHG=2116>Somerton YHG=2117>0-1. XBD=1449 XBD=1504 XBD=1625 XBD=1817 XBD=1864 XBD=2038 XBD=2082 XBD=2225 XBD=2368 XBD=2431 XBD=2486 XBD=2574 XHG=1377 XHG=1464 XHG=1517 XHG=1640 XHG=1832 XHG=1877 XHG=2052 XHG=2096 XHG=2239 XHG=2384 XHG=2447 XHG=2501 YBD=2141YHG=2118>0. YBD=2150 YBD=2151 YBD=2143 YBD=2142 YHG=2114>and YHG=2122>as YHG=2113>much YHG=2111>cotton YHG=2114>required YHG=2114>is YHG=2114>lightly YHG=2115>wound YHG=2124>on YHG=2117>to YHG=2115>this as " XBD=2578 XBD=1462 XBD=1498 XBD=1608 XBD=1664 XBD=1803 XBD=1953 XBD=2082 XBD=2217 XBD=2284 XBD=2522 XHG=1377 XHG=1476 XHG=1511 XHG=1623 XHG=1673 XHG=1816 XHG=1969 XHG=2096 XHG=2230 XHG=2299 XHG=2537 YBD=2189 YBD=2182 YBD=2181 YHG=2162>over YHG=2162>a YHG=2152>piece YHG=2153>rubber YHG=2153>tubing, YHG=2152>which YHG=2153>allows YHG=2153>for YHG=2154>contraction YHG=2153>of Suffolk.-Ashfield XBD=671 XBD=772 XBD=1027 XBD=1127 XBD=1312 XHG=543 XHG=708 XHG=818YBD=2184 XHG=1061 XHG=1171 YBD=2192 YBD=2184 YBD=2185 YBD=2184 YHG=2155>Magna YHG=2156>1-0. YHG=2156>Rattlesden YHG=2157>0-3. YHG=2156>Monks" XBD=2574 XBD=1438 XBD=1581 XBD=1701 XBD=1844 XBD=2096 XBD=2216 XBD=2331 XBD=2379 XBD=2480 XBD=2534 XHG=1375 XHG=1455 XHG=1597 XHG=1718 XHG=1859 XHG=2143 XHG=2234 XHG=2349 XHG=2396 XHG=2497 XHG=2552 YBD=2228 YBD=2219 YBD=2220 YHG=2191>the YHG=2193>cotton YHG=2191>fibres YHG=2191>during YHG=2191>sterilisation. YHG=2192>The YHG=2192>spool YHG=2192>is YHG=2192>held YHG=2192>in YHG=2201>a XBD=216 XHG=857 XBD=299 XBD=516 XBD=627 XBD=836 XBD=907 XBD=1030 XBD=1140 XBD=1308 XHG=134 XHG=236 XHG=346 XHG=539 XHG=674 XHG=929YBD=2223 XHG=1052 XHG=1186 YBD=2231 YBD=2231 YBD=2223 YHG=2193>leigh YHG=2195>0-3. YHG=2195>Hitcham YHG=2195>0-25. YHG=2195>Creeting YHG=2194>St. YHG=2195>Mary YHG=2196>0-25. YHG=2195>Hales, worth XHG=735 " XBD=2536 XBD=2574 XBD=1511 XBD=1680 XBD=1743 XBD=1781 XBD=1907 XBD=2184 XBD=2333 XBD=2484 XHG=1376 XHG=1524 XHG=1694 XHG=1759 XHG=1796 XHG=1924 XHG=2197 XHG=2349 XHG=2498 XHG=2551 YBD=2260 YBD=2263 YBD=2266 YBD=2267 YBD=2259 YBD=2258 YHG=2230>central YHG=2230>position YHG=2230>by YHG=2239>a YHG=2230>small, YHG=2230>spring-loaded YHG=2231>spindle YHG=2231>carried YHG=2231>in YHG=2240>a XBD=336 XBD=688 XBD=959 XBD=1062 XBD=1314 XHG=272 XHG=623 XHG=995 XHG=1108 Apideburgh YBD=2262 YBD=2261 YBD=2261 YBD=2261YHG=2233>Saxmunden YHG=2234>0-2. YHG=2234>0-2. YHG=2232>Battesford " XBD=2573 XBD=708 XBD=1080 XBD=1313 BorewaterO-2. XHG=450 XHG=755YBD=2300 XHG=1127 YBD=2300 YBD=2300 YHG=2273>Elmswell YHG=2272>BadwellAshO-1. YHG=2272>Norton 0. 0-2. XBD=1526 XBD=1616 XBD=1743 XBD=1785 XBD=1939 XBD=1989 XBD=2063 XBD=2174 XBD=2308 XBD=2369 XBD=2403 XHG=1376 XHG=1537 XHG=1628 XHG=1754 XHG=1797 XHG=1951 XHG=2001 XHG=2076 XHG=2186 XHG=2320 XHG=2382 XHG=2416 YBD=2302 YBD=2296 YBD=2304 YBD=2297 YBD=2305 YHG=2268>knurled YHG=2271>nut, YHG=2268>which YHG=2269>is YHG=2270>secured YHG=2271>to YHG=2269>the YHG=2269>spool YHG=2269>holder YHG=2269>by YHG=2278>a YHG=2270>bayonet XBD=195 XHG=669 XBD=355 XBD=402 XBD=654 XBD=698 XHG=135 XHG=209 XHG=371 XHG=450 YBD=2340 YHG=2311>Old YHG=2312>Newton YHG=2313>0. YHG=2311>Southwold YHG=2314>0. " XBD=1784 XBD=1565 XBD=1642 XHG=1376 XHG=1609 XHG=1653 YBD=2343 YBD=2335 YBD=2336 YHG=2312>tastening. YHG=2312>A YHG=2312>rubber

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" XBD=1681 XBD=1784XHG=582 XBD=1473 XHG=1376 XHG=1496 XHG=1705 YBD=2375 YBD=2374 YHG=2347>band YHG=2355>se.cures YHG=2347>the XBD=565 XBD=669 XHG=177 YBD=2379 YBD=2378 YHG=2350>Yorkshire.-Swinton YHG=2351>0-53. " XBD=1488 XBD=1605 XBD=1681 XHG=1720 XHG=1376 XHG=1524 XHG=1643 YBD=2413 YBD=2414 YHG=2385>whole YHG=2386>unit YHG=2388>to YHG=2386>the Warwickshire.-Dodwell " XBD=1783 XBD=787 XBD=891 XBD=1133 XBD=1314 XHG=682 XHG=828 XHG=951YBD=2416 XHG=1169 YBD=2417 YBD=2425 YHG=2388>Farm YHG=2389>1-0. YHG=2388>Windmill YHG=2388>Supply,

" " "

XBD=1839 XBD=1485 XBD=1605 XHG=1376 XHG=1531 XHG=1636 YBD=2453 YBD=2452 YBD=2460 YHG=2424>wrist. YHG=2424>The YHG=2433>surgeon XBD=280 XHG=793 XBD=366 XBD=577 XBD=776 XBD=857 XBD=1036 XBD=1147 XBD=1313 XHG=134 XHG=303 XHG=414 XHG=591 XHG=904YBD=2457 XHG=1060 XHG=1193 YBD=2459 YBD=2458 YBD=2465 YBD=2463 YBD=2455 YHG=2427>Dodwell YHG=2430>0-8. YHG=2430>Drayton YHG=2427>Reservoir YHG=2427>0-3. YHG=2427>Loxley YHG=2427>0-26. YHG=2426>AlvesXBD=1443 XBD=1566 XBD=1609 XBD=1724 XBD=1788 XHG=1377 XHG=1464 XHG=1588 XHG=1625 XHG=1747 YBD=2491 YBD=2499 YBD=2493 YBD=2500 YBD=2492 YHG=2472>can YHG=2472>carry YHG=2472>a YHG=2463>spool YHG=2463>of XBD=189 XHG=861 XBD=317 XBD=604 XBD=818 XBD=927 XBD=1199 XBD=1311 XHG=133 XHG=232 XHG=363 XHG=647 XHG=974YBD=2495 XHG=1244 YBD=2496 YBD=2502 YBD=2502 YBD=2494 YHG=2470>ton YHG=2469>0-26. YHG=2468>Wellsbourne YHG=2467>Hastings YHG=2467>0-2. YHG=2466>Luddington YHG=2466>0-1. XBD=1443XHG=848 XBD=1640 XBD=1785 XHG=1376 XHG=1468 XHG=1661 YBD=2531 YBD=2537 YBD=2530 YHG=2503>No.Coats YHG=2502>40 YHG=2505>cotton XBD=373 XBD=455 XBD=645 XBD=728 XBD=832 XBD=913 XHG=134 XHG=389 XHG=501 XHG=661 XHG=743 YBD=2535 YBD=2538 YBD=2533 YBD=2532 YBD=2534 YHG=2506>Alderminster YHG=2508>0-1. YHG=2505>Binton, YHG=2505>less YHG=2505>than YHG=2506>0-1.

" XBD=1699 XBD=1783 XHG=1718 XBD=1449 XBD=1518 XHG=1376 YBD=2569 YHG=2550>one XHG=1462 XHG=1530 YHG=2542>and YHG=2542>his YHG=2541>assistant " YBD=2595 YHG=2572>DISCUSSION " XBD=836 XBD=1418XHG=601 XBD=1498 XBD=1574 XHG=1377 XHG=1431 XHG=1519 YBD=2609 YBD=2608 YHG=2580>of YHG=2580>No. YHG=2581>60.

" " " " " " "

XBD=1313 XBD=251 XBD=532 XBD=596 XBD=717 XBD=844 XBD=1039 XBD=1105 XHG=177 XHG=272 XHG=552 XHG=610 XHG=863 XHG=1061 XHG=1120 YBD=2644 YBD=2643 YBD=2642 YBD=2643 YBD=2651 YHG=2615>The YHG=2614>combination YHG=2613>of YHG=2613>these YHG=2613>three YHG=2612>methods YHG=2612>of YHG=2613>approach XBD=1444XHG=738 XBD=1564 XBD=1671 XBD=1810 XHG=1426 XHG=1464 XHG=1585 XHG=1689 YBD=2669 YHG=2639>I YHG=2639>have YHG=2648>now YHG=2638>used XBD=195 XBD=299 XBD=462 XBD=525 XBD=640 XBD=769 XBD=821 XBD=897 XBD=997 XBD=1154 XBD=1313 XHG=133 XHG=205 XHG=309 XHG=474 XHG=535 XHG=650 XHG=779 XHG=832 XHG=908 XHG=1008 XHG=1168 YBD=2683 YBD=2684 YBD=2690 YBD=2681 YBD=2682 YBD=2682 YBD=2681 YHG=2653>has YHG=2654>been YHG=2653>worked YHG=2662>on YHG=2661>more YHG=2652>freely YHG=2652>in YHG=2652>the YHG=2660>area YHG=2652>around YHG=2651>Oxford XBD=1511 XHG=1376 YBD=2708 YHG=2679>cotton XBD=221 XBD=271 XBD=358 XBD=479 XBD=579 XBD=635 XBD=707 XBD=893 XBD=983 XBD=1057 XBD=1314 XHG=133 XHG=230 XHG=281 XHG=369 XHG=489 XHG=591 XHG=641 XHG=719 XHG=906 XHG=991 XHG=1066 YBD=2722 YBD=2729 YBD=2721 YBD=2728 YBD=2720 YBD=2720 YBD=2721 YHG=2692>than YHG=2693>in YHG=2701>any YHG=2693>other YHG=2692>part YHG=2692>of YHG=2692>the YHG=2691>country, YHG=2691>and YHG=2691>the YHG=2690>information XBD=1437 XBD=1481 XBD=1596 XBD=1693 XBD=1784 XHG=1374 XHG=1457 XHG=1504 XHG=1617 XHG=1715 YBD=2747 YBD=2746 YBD=2753 YHG=2718>for YHG=2726>a YHG=2725>year YHG=2717>and YHG=2725>my XBD=304 XHG=737 XBD=395 XBD=515 XBD=610 XBD=713 XBD=802 XBD=1126 XBD=1250 XBD=1315 XHG=134 XHG=325 XHG=417 XHG=536 XHG=631 XHG=825YBD=2759 XHG=1146 XHG=1274 YBD=2766 YBD=2760 YBD=2767 YBD=2767 YBD=2766 YBD=2759 YHG=2731>gathered YHG=2731>has YHG=2731>been YHG=2731>put YHG=2730>into YHG=2729>the YHG=2729>accompanying YHG=2738>map, YHG=2729>in

"" " " " " "

XBD=1313 XBD=184 XBD=310 XBD=431 XBD=596 XBD=742 XBD=925 XBD=1028 XBD=1101 XHG=132 XHG=209 XHG=335 XHG=458 XHG=622 XHG=767 XHG=951 XHG=1054 XHG=1134 YBD=3064 YBD=3065 YBD=3074 YBD=3075 YBD=3067 YBD=3067 YBD=3066 YHG=3033>his YHG=3044>cases YHG=3045>were YHG=3036>chiefly YHG=3038>Army YHG=3037>recruits YHG=3038>and YHG=3038>he YHG=3037>recorded XBD=1469 XBD=1543 XBD=1711 XBD=1782 XHG=1376 XHG=1500 XHG=1573 XHG=1740 YBD=3095 YBD=3100 YBD=3094 YHG=3066>tend YHG=3066>adhere YHG=3066>to home XBD=192 XHG=900 XBD=348 XBD=418 XBD=573 XBD=771 XBD=873 XBD=967 XBD=1190 XHG=133 XHG=218 XHG=375 XHG=442 XHG=599 XHG=797 XHG=993YBD=3105 YBD=3101 YBD=3110 YBD=3104 YBD=3112 YHG=3072>the YHG=3074>degree YHG=3074>of YHG=3074>dental YHG=3075>fluorosis YHG=3076>and YHG=3076>the YHG=3076>subject’s XBD=1442 XBD=1620 XBD=1723 XBD=1783 XHG=1376 XHG=1480 XHG=1650 XHG=1750 YBD=3140 YBD=3134 YBD=3133 YHG=3104>the YHG=3104>gloves, YHG=3104>but YHG=3105>it XBD=238 XHG=774 XBD=501 XBD=561 XBD=644 XBD=756 XBD=818 XBD=1101 XBD=1192 XBD=1313 XHG=132 XHG=257 XHG=518 XHG=578 XHG=662 XHG=829YBD=3143 XHG=1152 XHG=1208 YBD=3146 YBD=3149 YBD=3143 YBD=3143YHG=3114>of YBD=3144 YHG=3109>town, YHG=3113>presumably YHG=3114>at YHG=3114>the YHG=3114>time YHG=3114>examination. YHG=3114>It YHG=3115>must XBD=1462 XBD=1598 XBD=1783 XHG=1375 XHG=1514 XHG=1644 YBD=3172 YBD=3179 YHG=3143>has YHG=3143>the YHG=3144>great XBD=174 XHG=945 XBD=343 XBD=429 XBD=534 XBD=583 XBD=629 XBD=712 XBD=860 XBD=928 XBD=987 XBD=1124 XBD=1187 XBD=1313 XHG=132 XHG=188 XHG=360 XHG=445 XHG=548 XHG=597 XHG=646 XHG=728 XHG=875 XHG=1003YBD=3181 XHG=1142 XHG=1203 YBD=3176 YBD=3185 YBD=3180 YBD=3188 YBD=3181YHG=3153>to YBD=3189 YHG=3146>be YHG=3150>pointed YHG=3152>out YHG=3152>that YHG=3152>it YHG=3152>is YHG=3152>the YHG=3152>period YHG=3161>up YHG=3152>about YHG=3152>14 YHG=3162>years

" " " " " " " " " " " "" " "

exclusively-

XBD=1783 XBD=1598 XBD=1660 XHG=1373 XHG=1627 XHG=1695 YBD=2792 YBD=2785 YBD=2784 YHG=2756>impression YHG=2755>is YHG=2755>that XBD=247 XHG=826 XBD=369 XBD=504 XBD=576 XBD=736 XBD=795 XBD=983 XBD=1067 XBD=1121 XBD=1312 XHG=133 XHG=277 XHG=398 XHG=533 XHG=606 XHG=763 XHG=1013 XHG=1097 XHG=1150 YBD=2798 YBD=2805 YBD=2797 YBD=2805 YBD=2798 YBD=2804 YHG=2768>which YHG=2769>each YHG=2769>town YHG=2777>or YHG=2768>parish YHG=2768>is YHG=2768>marked YHG=2768>by YHG=2778>a YHG=2768>symbol, XBD=1428 XBD=1574 XBD=1646 XBD=1782 XHG=1376 XHG=1454 XHG=1602 XHG=1678 YBD=2824 YBD=2823 YBD=2831 YHG=2794>all YHG=2795>forms YHG=2794>of YHG=2795>postXBD=333 XHG=837 XBD=421 XBD=595 XBD=751 XBD=818 XBD=967 XBD=1159 XBD=1312 XHG=133 XHG=354 XHG=443 XHG=619 XHG=774 XHG=989YBD=2836 XHG=1183 YBD=2843 YBD=2844 YBD=2837 YBD=2841 YHG=2806>indicating YHG=2807>the YHG=2807>highest YHG=2807>degree YHG=2807>of YHG=2806>dental YHG=2806>fluorosis YHG=2806>noted, XBD=1573 XBD=1782 XHG=1376 XHG=1608 YBD=2870 YBD=2863 YHG=2833>operative YHG=2833>wound XBD=264 XHG=827 XBD=418 XBD=642 XBD=759 XBD=812 XBD=920 XBD=1034 XBD=1086 XBD=1314 XHG=133 XHG=279 XHG=434 XHG=652 XHG=770 XHG=928YBD=2882 XHG=1044 XHG=1097 YBD=2881 YBD=2880 YBD=2875 YBD=2880 YBD=2875 YBD=2883 YHG=2846>graded YHG=2854>severe, YHG=2844>moderate, YHG=2845>mild, YHG=2855>or YHG=2854>very YHG=2846>mild, YHG=2854>as YHG=2844>previously XBD=1493XHG=132 XBD=1575 XBD=1665 XBD=1783 XHG=1375 XHG=1511 XHG=1594 XHG=1688 YBD=2909 YBD=2902 YBD=2901 YHG=2873>sepsis YHG=2881>are YHG=2872>less YHG=2872>with XBD=327 YBD=2913 YHG=2882>described. XBD=1510 XBD=1669 XBD=1784 XHG=1375 XHG=1547 XHG=1706 YBD=2941 YBD=2940 YBD=2947 YHG=2911>cotton YHG=2910>t YHG=2920>any XBD=357 XHG=876 XBD=487 XBD=635 XBD=856 XBD=901 XBD=1009 XBD=1081 XBD=1166 XBD=1312 XHG=175 XHG=377 XHG=511 XHG=656 XHG=919YBD=2952 XHG=1031 XHG=1100 XHG=1188 YBD=2959 YBD=2958 YBD=2960 YBD=2960 YBD=2952 YHG=2923>Recently YHG=2922>Spira YHG=2922>(1942) YHG=2922>published YHG=2932>a YHG=2931>map YHG=2932>onh a n YHG=2923>the YHG=2922>distriXBD=1487XHG=858 XBD=1691 XBD=1782 XHG=1376 XHG=1518 XHG=1743 YBD=2986 YBD=2979 YHG=2950>other YHG=2950>ligature. YHG=2950>It XBD=260 XBD=313 XBD=491 XBD=544 XBD=742 XBD=848 XBD=951 XBD=1010 XBD=1141 XBD=1226 XBD=1313 XHG=133 XHG=271 XHG=319 XHG=502 XHG=554 XHG=770 XHG=960 XHG=1017 XHG=1149 XHG=1235 YBD=2989 YBD=2998 YBD=2991 YBD=2990 YBD=2990 YBD=2991 YBD=2990 YHG=2957>bution YHG=2960>of YHG=2960>fluorosis YHG=2961>in YHG=2960>England. YHG=2961>The YHG=2962>data YHG=2971>on YHG=2961>which YHG=2962>this YHG=2970>was XBD=1407 XBD=1582 XBD=1632 XBD=1781 XHG=1375 XHG=1420 XHG=1590 XHG=1640 YBD=3018 YHG=2989>is YHG=2988>difficult YHG=2989>to YHG=2989>handle XBD=364 XBD=478 XBD=679 XBD=737 XBD=864 XBD=909 XBD=1108 XBD=1312 XHG=133 XHG=381 XHG=496 XHG=695 XHG=759 XHG=886 XHG=931 XHG=1128 YBD=3027 YBD=3028 YBD=3035 YBD=3029 YBD=3033 YBD=3033 YHG=2998>constructed YHG=3007>were YHG=2999>collected YHG=3000>in YHG=3000>quite YHG=3008>a YHG=2999>different YHG=3001>manner ; XBD=1452 XHG=1689 XBD=1551 XBD=1654 XBD=1782 XHG=1375 YBD=3056 YHG=3027>ends XHG=1484 XHG=1587 YHG=3027>and YHG=3027>the YHG=3027>cut

" XBD=1653 XBD=1781XHG=450 XBD=1594 XHG=1375 XHG=1609 XHG=1666 YBD=3210 YBD=3217 YHG=3181>advantage YHG=3181>of YHG=3181>negliXBD=170 XBD=246 XBD=386 XBD=433 XBD=675 XHG=131 XHG=181 XHG=263 XHG=401 YBD=3214 YBD=3223 YBD=3217 YBD=3218 YBD=3225 YHG=3186>of YHG=3195>age YHG=3188>which YHG=3189>is YHG=3189>important. " XBD=1476 XHG=1487 XBD=1650 XBD=1782 XHG=1669 YBD=3256 XHG=1377 YBD=3255 YHG=3221>(most YHG=3219>gible YHG=3228>expense " XBD=818 XHG=620 YBD=3278 YHG=3255>SUMMARY

" XBD=1500 XBD=1845 XHG=1566 XHG=1375 YBD=3294 YBD=3293 YHG=3252>operations YHG=3257>major XBD=219 XHG=544 XBD=343 XBD=418 XBD=512 XBD=755 XBD=964 XBD=1039 XBD=1132 XBD=1240 XBD=1316 XHG=785 XHG=152 XHG=249 XHG=375 XHG=446 XHG=995YBD=3325 XHG=1066 XHG=1163 XHG=1273 YBD=3322 YBD=3324 YBD=3332 YBD=3325 YBD=3326 YBD=3325 YBD=3327 YHG=3293>-In YHG=3294>view YHG=3296>of YHG=3297>the YHG=3296>increasing YHG=3296>evidence YHG=3297>of YHG=3297>the YHG=3297>r6le YHG=3298>of " XBD=1782 XBD=1449 XBD=1534 XHG=1377 XHG=1487 XHG=1568 YBD=3324 YBD=3333 YHG=3304>can YHG=3296>be YHG=3296>performed fluorine " XBD=1314 XBD=338 XBD=423 XBD=658 XBD=720 XBD=828 XBD=923 XBD=1116 XHG=297 XHG=357 XHG=443 XHG=677 XHG=736 XHG=847 XHG=943YBD=3363 XHG=1136 YBD=3362 YBD=3371 YBD=3369 YBD=3365YHG=3334>and YHG=3333>in YHG=3334>the YHG=3334>well-being YHG=3334>of YHG=3343>man YHG=3334>animals, YHG=3335>methods

clinician " XBD=1315 XBD=188 XHG=904 XBD=405 XBD=468 XBD=603 XBD=689 XBD=946 XBD=1227 XHG=130 XHG=207 XHG=426 XHG=489 XHG=624 XHG=966YBD=3402 XHG=1248 YBD=3399 YBD=3407 YBD=3410 YBD=3403 YHG=3378>are YHG=3373>suggested YHG=3373>to YHG=3373>assist YHG=3373>the YHG=3373>in YHG=3374>appreciating YHG=3374>the r " XBD=610 XBD=367 XHG=438 XBD=426 XHG=130 YBD=3440 YHG=3410>fluorine. XHG=383 YHG=3407>distribution YHG=3411>of

1

J 1.

Pannett, C. A. Lancet, 1942, 755.

CARRY

COTTON