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Distribution of atmospheric pressure
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i'(j,.'. '~(I~r'' ,%1~(',S'.
[J
Number of bits used in ll~e w,M<, 4000 in all. The ~ bits arc run in the All)ion Mill as/bllows: Starting in the morning,~ with new teeth, on 4-inch fbe(l, in }lard t)ine or red-wood nntl] noon. Then a.set of' new teeth run until night. At night the watchman puts in the next set. The dulled teeth are sharpened twice tbr the bottom saw and are then worked in the top saw. * *
Fig. 62.
Enterson's , , P l a n e r Bit.'~
Inserted toothed saws are made fl'om 13 to 6 gauge, and from 12 to 72 inches in dianieter, the smaller sizes being nsed tbr edgers and gangs.
Distribution of Atmospheric Pressure.--L. T. de Bort calls attention to the fact that ill tWO colmnns of air, which have tim same pressure at the surface of the ground, if the temperatures are different the decrease of i)ressure at higher levels is slower in the warmer column. Hence results a tendency of the air to pass from tile warmer to tlle colder column, accompanied" by a Palling barom.eter in the former and a rising barometer in the latter. The eflhcts of difference of temperature being generally opposite to those of barometer pressure, the transfer of air may be e~cte(l in the upper atmosphere, even when the l)ressure is lower at the bottom of the column. The ocean currents~ in winter, augment the enerKv of the atmospheric disturbances by . im:,reasing the opl)osith)n which already exists between the continental nnd ~x'eanic teml)crtmu, c~.__( b,~id(, s l~!~dns. C.
i'(j,.'. '~(I~r'' ,%1~(',S'.
[J
Number of bits used in ll~e w,M<, 4000 in all. The ~ bits arc run in the All)ion Mill as/bllows: Starting in the morning,~ with new teeth, on 4-inch fbe(l, in }lard t)ine or red-wood nntl] noon. Then a.set of' new teeth run until night. At night the watchman puts in the next set. The dulled teeth are sharpened twice tbr the bottom saw and are then worked in the top saw. * *
Fig. 62.
Enterson's , , P l a n e r Bit.'~
Inserted toothed saws are made fl'om 13 to 6 gauge, and from 12 to 72 inches in dianieter, the smaller sizes being nsed tbr edgers and gangs.
Distribution of Atmospheric Pressure.--L. T. de Bort calls attention to the fact that ill tWO colmnns of air, which have tim same pressure at the surface of the ground, if the temperatures are different the decrease of i)ressure at higher levels is slower in the warmer column. Hence results a tendency of the air to pass from tile warmer to tlle colder column, accompanied" by a Palling barom.eter in the former and a rising barometer in the latter. The eflhcts of difference of temperature being generally opposite to those of barometer pressure, the transfer of air may be e~cte(l in the upper atmosphere, even when the l)ressure is lower at the bottom of the column. The ocean currents~ in winter, augment the enerKv of the atmospheric disturbances by . im:,reasing the opl)osith)n which already exists between the continental nnd ~x'eanic teml)crtmu, c~.__( b,~id(, s l~!~dns. C.