Tannin spot tests. : J. Hampton Hoch (Jour. Am. Pharmaceutical Asso., 1933, XXII, 121–124)
✍ Scribed by J.S.H.
- Publisher
- Elsevier Science
- Year
- 1933
- Tongue
- English
- Weight
- 151 KB
- Volume
- 215
- Category
- Article
- ISSN
- 0016-0032
No coin nor oath required. For personal study only.
✦ Synopsis
that the addition of cod liver oil (preferably 2 per cent.) to the ration during the winter months increases egg production by pullets. The hatching power of the eggs is very substantially increased. These results are attributed to the vitamin D content of the cod liver oil, for similar increases in egg production and hatching power were observed when hens which had received no cod liver oil were turned out of doors and exposed to the direct sunlight regardless of whether or not they then obtained any green feed (the source of vitamin A).
J. S. H.
Loschmidt's Number. This is the number of atoms in a gramatom or the number of molecules in a gram-molecule.
S. E. VIRGO (Science Progress, 1933, XXVII, 634-649) has made a survey of the more than eighty different experimental determinations of this number by 21 different methods.
He concludes that the most probable value is (60.62 f 0.03) X 10~~.