No. 1, July, 1920] PHYSIOLOG1 225 



1495. BlLLER, Ai.ma, LNdD, I). VanSi.vki;. Direct determination of non-amino nitrogen 

 in the products of protein hydrolysis. Jour. Biol. Chem 39:479-488. L919. 



1490. JONES, 1). I?., am. (' <). Johns. The hydrolysis of stizolohin, the globulin of th»- 

 Chinese velvet bean, Stlzoloblum niveum. .Inur. Biol. Chem. 40: 135 Ms. L919. — The globu- 

 lin whs hydrolyzed .-11111 the resulting amino-aoids determined. Qlutaminio acid, aspartic 



acid, leucine, and lysine arc the mosi abundanl ones. — <!. li Rigg, 



1497. Koessi.hr, K. K., ami M. T. Hwki Studies on protelnogenous amines. II. A 

 mlcrochemical colorimetric method for estimating Imidezole derivatives. Jour. Biol, Chem. 

 39:497-519. 1919. 



1498. Koesslhr, K. K., and M. 1 II wkh. Studies on pro teinogenous amines. IV. The 

 production of histamine from hlstldine by Bacillus coll communis. Jour. Biol. Chem. 39: 539- 

 584. 1919. 



1499. Meyer, Abth. Die Beziehung zwischen Eiwelss- und Saurebildung in Laubblat- 

 tern. [Relation between synthesis of proteins and formation of acid In leaves.] Ber. Deutseh. 

 Rot. Ges. 36: 508-514. 1919. — 1. In the presence of carbohydrates, small amounts of profc 

 are synthesized in the dark; but much larger amounts in the light. The presence or absein'; 

 of COo does not influence this process. Leaves devoid of chlorophyll do qo1 synthesize pro- 

 tein in either case. 2. The acidity of the leaf decreases slightly in the dark, very rapidly in 

 the light, and hardly at all in leaves devoid of chlorophyll; the presence or absence of I 

 has no influence. 3. Shaded leaves show only a small amount of calcium oxalate; increase in 

 light intensity increases the calcium oxalate content. This process is independent of the C< >.. 

 content of the atmosphere. Protein synthesis, decrease in acidity, and the appearance of cal- 

 cium oxalate in the leaves are closely correlated. The green leaves which synthesize a la: 

 amount of protein in the light obtain the ions for the building up of the protein molecule 

 from the carbohydrates and the inorganic salts. The bases of these salts are set free ami 

 are neutralized by organic acids produced in the leaves. The organic acids are usually forme 1 

 in quantities sufficient to neutralize the free bases. Sometime, however, an excess of the 

 acid is produced, due to a prolonged effect of the stimulation of the acid on the protoplast. 

 The oxygen set free in protein synthesis is either used in S3 r nthesis of organic acids from 

 carbohydrates or is liberated as free O2. — Ernst Artschwager. 



1500. Peters, A. W. The micro determination of nitrogen by direct Nesslerization and of 

 total solids in drop quantities of human blood. Jour. Biol. Chem. 39: 2S5-29S. 1919. — A 

 method is described for the determination of total solids and of total and non-protein nitrogen 

 in fifteen to thirty drop quantities of human blood. — G. B. Rigg. 



1501. Willaman, J. J. Nitrogen fixation. [Rev. of: Allen, E. R. Some conditions 

 affecting the growth and activities of Azotobacter chroococcum. Ann. Missouri Bot. Gard. 6: 

 1-44. 1919 (See Bot. Absts. 4, Entry 1532).] Bot. Gaz. 68: 71-72. 1919. 



METABOLISM (ENZYMES, FERMENTATION) 



1502. Anonymous. [Rev. of: Coff, John R., W. V. Linder, and G. F. Beyer. Produc- 

 tion of glycerine from sugar by fermentation. Jour. Indust. Eng. Chem. 11: 842-845. 1919.] 

 Jour. Franklin Inst. 188: 575. 1919. — A molasses solution made alkaline and held at about 

 30° to 32°C. gave with the Steinberg variety of Saccharomyces ( llipsoidcus a yield of glycerine 

 equal to 20 to 25 per cent of the sugar. Corn sugar and cane sugar gave poorer yields. — 

 2?rnr.s-/ Shaw Reynolds. 



1503. Anonymous. Alcoholic fermentation of banana-must. Sci. Amer. Supplem. 87: 

 233. 1919. 



BOTANICAL ABSTRACTS, VOL. IV, NO. 1 



