Vol. II April, 1913 No. 7 



Biochemical Bulletin 



Edited, for the Columbia University Biochemical Association, by the 



EDITORIAL COMMITTEE: 



ALFRED P. LOTHROP, Chairman, 



PAUL E. HOWE, Secretary, WILLIAM J. GIES, Treasurer, 



WALTER H. EDDY, JOSEPH S. HEPBURN, H. O. MOSENTHAL. 



NELLIS B. FOSTER, MAX KAHN, EMILY C. SEAMAN, 



F. G. GOODRIDGE, ARTHUR KNUDSON, ETHEL WICKWIRE, 



TULA L. HARKEY, EDGAR G. MILLER, JR., LOUIS E. WISE, 



all of the Staff of the Biochemical Department of Columbia University. 



CONTENTS 



Heinrich Ritthausen (Portrait) 334 



Appreciation. Thomas B. Osborne ; 335 



BiBLiOGRAPHY. Lewis IV. Fetzer. 339 



Dinner To Professor Chittenden : Testimonial by his pupils, '94S. 349 



Society for Experimental Biology and Medicine : Tenth anniversary meeting 



and dinner. Nineteen O. Three 358 



Methods for the Electrometric Determination of the Concentration of 



Hydrogen IONS IN BiOLOGiCAL FLUIDS. K. A. Hasselbalch 367 



A Method for the Determination of Tryptophan derived from Protein. 



Jesse A. Sanders and Clarence E. May 373 



Physical Chemistry of Muscle Plasma. Filippo Bottazzi '. 379 



Fasting Studies : h. A Note on the Composition of Muscle from Fasting Dogs. 



H. C. Biddle and Paul E. Howe 386 

 Some Notes on the Form of the Curve of Carbon-dioxide Excretion Result- 



iNG FROM Muscular Work Following Forced Breathing. G. O. Higley... 390 

 The Influence of Barometric Pressure on Carbon-Dioxide Excretion in Man. 



G. O. Higley 393 

 The Relation of Acapnia to Shock, and a Consideration of the Mechanical 



Effects of Artificial Hyper-Respiration upon the Circulation. 



Henry H. Janeway and Ephraim M. Ewing 403 

 Cleavage of Pyromucuric Acid by Mold Enzymes. 



Arthur W. Dox and Ray E. Neidig. 407 



Analysis of the Ash of the Castor Bean. Marston Lovell Hamlin 410 



Notes on the Chemical« Nature of the " Tannin Masses " in the Fruit of 



the Persimmon. Ernest D. Clark 412 



HiSTON AND ITS Preparation. Walter H. Eddy 419 



Did von Wittich Antedate Ostwald in the Definition of Enzyme Action ? 



William N. Berg 441 



The Biochemical Society, England 446 



Scientific Proceedings of the Columbia University Biochemical Association. 



Alfred P. Lothrop, Secretary 452 



Biochemical Bibliography and Index. William J. Gies 470 



Biochemical News, Notes and Comment 476 



Editorials : Including numerous quotations from letters on the Mathews plan for 



the Organization of an American Biological Society 487 



NEW YORK 



Columbia University Biochemical Association. 



Entered as second-claas matter in the Post Office at Lancaster, Pa. 



