March, 1920] PHYSIOLOGY 119 



METABOLISM (GENERAL) 



805. Bates, Frederick, and H. W. Bearce. New Baume scale for sugar solutions. 

 Jour. Franklin Inst. 187: 215. 1919. 



806. Hawk, Philip B., Hamilton R. Fibhback, and Olaf Beroeim. Compressed 

 yeast as food for the growing organism. Amer. Jour. Physiol. 48: 211-220. 1919. — Young 

 white rats, when given a complete diet except for lack of "water-soluble vitamine," showed 

 loss of weight or exceptionally low gains, but when small quantities of dried Fleiscbmann 

 yeast were added to the diet immediate, substantial gains took place. The growth-promoting 

 power of compressed yeast is not destroyed by heating to 105 °C. — Ernest Shaw Reynolds. 



807. Hawk, Philip B., Clarence A. Smith, and Ralph C. Holder. Baker's yeast 

 as food for man. Amer. Jour. Physiol. 48: 199-210. 1919. — Fleischmann yeast was used as 

 a substitute for varying percentages of the protein diet and also at times as the source of the 

 "water-soluble vitamine." Under both of these conditions yeast was found to be useful to 

 the body, and in large quantities it had a laxative action. — Ernest Shaw Reynolds. 



808. Hollingshead, R. S. Chemical analyses of logan blackberry (loganberry) juices. 

 U. S. Dept. Agric. Bull. 773. 12 p. 1919.— See Bot. Absts. 3, Entry 808. 



809. Ichimura, Tsutsumi. On the localization of anthocyanin in the spring leaves of some 

 trees and shrubs in the temperate regions of Japan. Bot. Mag. Tokyo 33: 12-15. 1919. — 

 Thii paper describes the localization of anthocyanin in the young leaves of 69 species of Jap- 

 anese plants belonging to 31 families, including in this account 45 genera. The results are 

 presented in tabular form and show that in the majority anthocyanin occurs in the mesophyll, 

 or both epidermis and mesophyll. The figures are as follows: epidermal hairs, 3 per cent; 

 epidermis, 10 per cent; mesophyll, 47 per cent; epidermis and mesophyll, 39 per cent. "It is 

 also noticeable that the lower epidermis and lower hypodermal layer are richer in the pigment 

 than the upper ones in the young leaves." — L. L. Burlingame. 



810. Kendall, Arthur I., and Marjorie Ryan. A double sugar medium for the 

 cultural diagnosis of intestinal and other bacteria. Jour. Infect. Diseases 24: 400-404. 1919. 

 — A new double sugar medium is described; this medium consisting of nutrient agar con- 

 taining 2.5 per cent agar, 1 per cent saccharose, and 0.1 per cent mannitol, the reaction being 

 adjusted so that the color, when the Andrade indicator is added, is faintly pink when hot. 

 This medium can be advantageously applied to the cultural diagnosis of aerobic bacteria 

 in general. — Selman A. Waksman. 



811. Lynch, Vernon. The function of the nucleus of the living cell. Amer. Jour. 

 Physiol. 48: 258-283. 1919. — Enucleated Ameba proteus cells live almost as long as nucleated 

 cells deprived of food; movements are somewhat affected; nutrition is disturbed; and sensi- 

 tiveness to changes of oxygen content of the environment, to high or low temperatures, and 

 to cyanide is increased. The results favor the "synthesis" theory of function of the nucleus. 

 — Ernest Shaw Reynolds. 



812. Mottram, V. H. Sudan III and the detection of fat. Jour. Physiol. [London] 52 1 : 

 xviii-xix. 1918.— "One gram of the powdered solid is shaken with 10 cc. of the saturated 

 solution of Sudan III in 70 per cent alcohol for a minute. The fluid is filtered off through a 

 small fat-free filter paper and the color of the resultant compared with that of a control." 

 For the control 1 gram of fat-free powder is treated as above. "When the tested solid 

 contains more than 0.04 gram of fat the Sudan III filtrate is markedly lighter in color than the 

 control." A colorimetric quantitative method for determining fat content might be worked 

 out upon this basis. — Ernest Shaic Reynolds. 



