542 Proceedings Columbia Biochemical 'Association [July 



B 



Louis Berman and William J. Gies. 

 Studies of intracellular chemistry: 

 A differential stain for mucins and 

 mucoids. (92) 



Walter H. Eddy. Two new histons. 



(93) 



Walter H. Eddy. Histon nucleo- 

 protein : A protein salt. (94) 



Frank R. Elder. Further experi- 

 ments on the preparation of modi- 

 fied collodion membranes for use in 

 dialysis experiments. (95) 



Samuel Gitlow. Comparative studies 

 of the permeabihty of collodion and 

 collodion-fat membranes. (96) 



TuLA L. Harkey. Further studies of 

 edema : On the absorption of water 

 by white lupin seeds. (97) 



TuLA L. Harkey. Further studies of 

 edema: On the postmortem absorp- 

 tion of water by tissues from well 

 nourished and fasting animals. 



(98) 

 Paul E. Howe and William J. Gies. 

 A preliminary study of the resist- 



ance of fasting dogs to hemorrhage. 



(99) 

 V. E. Levine. Biochemical studies of 



selenium. (100) 

 Helen I. Mattill and H. A. Mattill. 



The influenae of electrolytes on 



the precipitation of soluble starch. 



(lOl) 



Edgar G. Miller, Jr. Determinations 

 of the acidity of fruit Juices. (102) 



Olive G. Patterson. A study of the 

 influence of external hemorrhages 

 on the partition of urinary nitrogen. 

 (103) 



P. W. PuNNETT. The action of a 

 high frequency current on the ac- 

 tivity of pancreatic amylase. (104) 



Christian Seifert and William J. 

 Gies. A further study of the dis- 

 tribution of osseomucoid. (105) 



A. W. Thomas. A further effort to 

 prepare a colorless biuret reagent. 

 (106) 



Charles Weisman. Biochemical 

 studies of expired air in relation to 

 Ventilation. (107) 



A. ABSTRACTS OF PAPERS ON RESEARCH BY NON-RESIDENT 



MEMBERS5 



86. On the occurrence of a toxin in juice expressed from the 

 bread mould, Rhizopus nigricans (Mucor stolonifer). A. F. 



Blakeslee and Ross Aiken Gortner. {Biochemical Laboratory 

 of the Station for Experimental Evolution, The Carnegie Institu- 

 tion of Washington.) During a series of immunity studies, having 

 as their aim a possible Solution of the chemical nature of sex, we 

 observed that the "presssaft" from the aerial filaments of Rhizopus 

 nigricans caused almost instant death when injected intravenously 

 into rabbits. Several other species of the Mucorineae were tested 

 and no such result has yet been obtained. The mycelium directly 

 in contact with the substratum apparently contains as great a quan- 



s Members of the Association who were not officially connected with the 

 Columbia Biochemical Department when the researches were conducted. 



