158 



Proceedings CGlumhia Biochcmical Association [Sept. 



Emily C. SE.^MAN. Biochemical 

 studies of beryllium sulfate. (39) 



Clayton S. Smith. Chemical changes 

 in fish during long periods of cold 

 storage (40) 



William Weinberger. An attempt to 

 sharpen the end point in Benedict's 

 method for the quantitative deter- 

 mination of sugar in urine. (41) 



William H. Welker. Diffusibility of 



protein through rubber merhbranes, 

 with a note on the disintegration of 

 collodion membranes by common 

 ethyl ether and other solvents. (42) 

 Charles Weisman. A further study 

 of the Bardach test for protein. 



(43) 

 Harold E. Woodward. A study of the 

 surface tension of dog blood-serum 

 by the drop-weight method. (44) 



I. ABSTRACTS OF PAPERS ON RESEARCH BY NON- 

 RESIDENT MEMBERS^ 



1. The physico-chemical basis of striated-muscle contrac- 

 tion. William N. Berg. {Washington, D. C). Part I was 

 published in the June issue of the Biochemical Bulletin; part 

 II is presentcd in this issue} 



2. Factors influencing the flavors of storage butter. Wil- 

 liam N. Berg, with L. A. Rogers, C. R. Potteiger, and B, J. 

 Davis. {Dairy Division Research Laboratories, Bureau of Aninial 

 Industry, Washington, D. C.) The official government bulletin on 

 this subject is in press. 



3. A study of ropy bread. Isabel Bevier, for Anna W. 

 Williams. {Research Laboratory, Department of Household Sci- 

 ence, University of Illinois, Urbana, III.) Published in fidl in the 

 June issue'^ of the Biochemical Bulletin. 



4. On the toxicity of guinea pig urine and its relation to 

 anaphylaxis. Allan C. Eustis. {Laboratory of Clinical Med- 

 iane, Department of Nutrition, Tidane University, New Orleans, 

 La.) The nrine of guinea pigs, fed on Kohlrabi or cabbage, con- 

 tains a great excess of indican, which readily oxidizes to indigo. 

 Such urine also contains excess of putrefactive amins. Tests for 

 /8-imidazolylethylamin, as well as efforts to isolate it, have been 

 negative. Experiments on fifteen guinea pigs weighing 300 grams 

 each, with different specimens of guinea pig urine, indicate that 1.5 

 c.c. constitutes a lethal dose when injected intravenously. In these 



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

 Columbia biochemical department when the research was conducted. 

 ^Berg: Biochemical Bulletin, 1912, i, pp. 535-7; ii, pp. loi-io. 

 * Williams : Biochemical Bulletin, 1912, i, pp. 529-534. 



