No. 2, September, 1921] PHYSIOLOGY 161 



METABOLISM (NITROGEN RELATIONS) 



1021. Beijerixck,M. W. Chemosynthesebijdenitrificatiemetzv/anelalsenergie. [Chemo- 

 synthesis and denitrification with sulphur as a source of energy.] Verslag. K. Akad. Weten- 

 schappen Amsterdam 29: 845-85C. 1920. 



1022. Brewster, J. F. The use of edestin in determining the proteolytic acitivity of pepsin. 

 Jour. Biol. Chem. 46: 119-127. 1921. — A method for the preparation of standard edestin from 

 hemp seed is given, and also a method for the assay of pepsin based on the use of this standard 

 preparation. — G. B. Rigg. 



1023. CoHN, E. J. A physicochemical method of characterizing proteins. II. Jour. Biol. 

 Chem. 46*: iii-iv. 1921. — Glutenin and serum globulin are precipitated as undissociated mole- 

 cules at their isoelectric point. Experimental evidence suggests that there is a physicochemi- 

 cal basis for our present classification of simple proteins. — G. B. Rigg. 



1024. Johns, C. O., and C. E. P. Gersdorff. The proteins of the tomato seed, Solanum 

 esculentum. Jour. Biol. Chem. 46*: xxvi. 1921. — A 4 per cent aqueous solution of sodium 

 chloride extracts the maximiun amount of protein. Two globulins, both high in sulphur, 

 were found. — G. B. Rigg. 



1025. Johns, C. 0., and H. C. Waterman. Conphaseolin: a new globulin from the navy 

 bean. Jour. Biol. Chem. 46*: xliv. 1921. 



1026. Miller, Harry G. Distribution of nitrogen in the alfalfa seed. Jour. Amer. 

 Chem. Soc. 43: 906-914. 1921. 



METABOLISM (ENZYMES, FERMENTATION) 



1027. Fred, E. B., W. H. Peterson, and J. A. Anderson. The relation of lactic acid 

 bacteria to corn silage. Jour. Biol. Chem. 46: 319-327. 1921. — Organisms of the Lactobacillus 

 pentoaceticus type play an important part in the chemical changes produced. They are 

 present throughout the fermentation, and in the last stages are the predominant type. Organ- 

 isms of the Bacillus lactis acidi type persist and act only during the first days of the fermenta- 

 tion. The production of alcohol is undoubtedly due in part to the action of the pentose- 

 fermenting type. — G. B. Rigg. 



ORGANISM AS A WHOLE 



1028. Dale, H. H. The biological significance of anaphylaxis. Proc. Iloy. Soc. London 

 3.91:126-147. 1920. 



1029. Funk, Georg. Ueber das Verhalten der Oscillatoria amphibia Ag. im Kolonie- 

 Verband. [The behavior of Oscillatoria amphibia Ag. in colony-union.] Ber. Deutsch. Bot. 

 Ges. 38: 267-274. Fig. 1. 1920. — The author explains methods of obtaining relatively pure 

 cultures of the organism for experimentation. He observes the movements due to causes 

 residing within the organisms themselves when the cultures are placed, in varying quantities, 

 in Petri dishes and in glass tubes filled, sealed, and laid horizontally. He also reports their 

 behavior when stimulated by external agencies, for example, light, heat, and electricity. 

 Further experimentation is in progress with a view^ to determining the causes of reactions. — 

 N. L. Gardner. 



1030. JosHiA, N, V. Studies on the root nodule organism of the leguminous plants. Mem. 

 Dept. Agric. India Bact. Ser. 1: 247-276. 1920. — The cross inoculation experiments made 

 indicate that there is only a single species of the legume nodule organism, when nitrogen 

 fixation and stimulation are taken as the criteria Where inoculation did not lead to nodule 

 formation the plants were still found to derive benefit from the nitrogen fixed by the micro- 

 organism. The root-nodule organism was found to exert a beneficial influence on gramina- 



