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A new seed-oil
853
CURRENT
TOPICS.
[J. F. I.
protection in dealing with mine fires, or entering the mine after explosions. The atmosphere in such cases contains a good deal of carbon monoxide, against which the ordinary charges of the mask are inert, and further, there is often a decided diminution of the proportion of oxygen, which may in itself be a great danger. Inasmuch as the masks protect against smoke, they give a feeling of security to a person entering the smoky air and thus add to the likelihood of his being overcome. H. L. Application of Fish-oils in the Paint Industry. (Pairzt dlfrs. Assn. Circ. No. 74.)~Several fish-oils have long been used in the manufacture of soap, leather and for hydrogenation. Tests have been made of four fish-oils-grayfish, shark, fur-seal and skatewith a view to determine if any of them can be used as drying Incidentally, it has been oils, but the results were negative. shown that, as regards these oils, at least, the iodine number is not an index of the drying qualities, for the fish-oils showed numbers from 135 to 151, but possessed much less drying power than some vegetable oils (soy bean and cottonseed), having figures as low as 120 to 130. From a sample of shark liver oil a notable amount of an unsaturated hydrocarbon was extracted. The presence of this was indicated by the ldw saponification number and the large amount of unsaponifiable matter. The hydrocarbon was a pale yellow liquid without pronounced odor. A hydrocarbon of somewhat similar character was isolated a few years ago from the livers of species of sharks in Japanese waters by Mitsumaru Tsujimoto. H. L. A New Seed-oil. (Paint Mfrs. Assn. Civc. No 7z.)-The oil from the seeds of Calojhylluwt inophylluna, a hardwood tree of the Philippines, known locally as Palo Maria, has been examined with a view to its applicability to the paint industry, but the and it is evident that it must be results are not satisfactory, subjected to some special treatment to give it rapid drying propThe oil is not serviceable for food as it contains a poisonerties. ous resin, to which the color and odor are due. It is, however, used in its native regions as an application in skin affections. The fatty acids yielded by it are principally palmitic, oleic and stearic, so that it would serve well as a source of soap and glycerol. H.
L.
CURRENT
TOPICS.
[J. F. I.
protection in dealing with mine fires, or entering the mine after explosions. The atmosphere in such cases contains a good deal of carbon monoxide, against which the ordinary charges of the mask are inert, and further, there is often a decided diminution of the proportion of oxygen, which may in itself be a great danger. Inasmuch as the masks protect against smoke, they give a feeling of security to a person entering the smoky air and thus add to the likelihood of his being overcome. H. L. Application of Fish-oils in the Paint Industry. (Pairzt dlfrs. Assn. Circ. No. 74.)~Several fish-oils have long been used in the manufacture of soap, leather and for hydrogenation. Tests have been made of four fish-oils-grayfish, shark, fur-seal and skatewith a view to determine if any of them can be used as drying Incidentally, it has been oils, but the results were negative. shown that, as regards these oils, at least, the iodine number is not an index of the drying qualities, for the fish-oils showed numbers from 135 to 151, but possessed much less drying power than some vegetable oils (soy bean and cottonseed), having figures as low as 120 to 130. From a sample of shark liver oil a notable amount of an unsaturated hydrocarbon was extracted. The presence of this was indicated by the ldw saponification number and the large amount of unsaponifiable matter. The hydrocarbon was a pale yellow liquid without pronounced odor. A hydrocarbon of somewhat similar character was isolated a few years ago from the livers of species of sharks in Japanese waters by Mitsumaru Tsujimoto. H. L. A New Seed-oil. (Paint Mfrs. Assn. Civc. No 7z.)-The oil from the seeds of Calojhylluwt inophylluna, a hardwood tree of the Philippines, known locally as Palo Maria, has been examined with a view to its applicability to the paint industry, but the and it is evident that it must be results are not satisfactory, subjected to some special treatment to give it rapid drying propThe oil is not serviceable for food as it contains a poisonerties. ous resin, to which the color and odor are due. It is, however, used in its native regions as an application in skin affections. The fatty acids yielded by it are principally palmitic, oleic and stearic, so that it would serve well as a source of soap and glycerol. H.
L.