CONTENTS. 



Gary N. Calkins: The effect of conjugation. 36 (1411). 



Rhoda Erdmann: Endomixis and size variations in pure lines of Paramecium aurelia. 

 37 (I4»). 



A. R. Moore: Electrical stimulation and COs production in nervous tissue. 38 

 (I413)- 



Vera Danchakoff (by invitation): Mesenchymal activity as a factor in resistance 

 against mouse sarcoma in chick. 39 (1414). 



Eduard Uhlenhuth: Further proof of the antagonism existing between the thymus 

 and parathyroid. 40 (1415). 



Robert A. Hatcher and Cary Eggleston: The behavior of certain digitalis prin- 

 ciples in the body. 41 (1416). 



Victor C. Myers and Morris S. Fine: The relative importance of the intestine and 



kidneys as excretory channels. 42 (1417). 

 P. E. Smith (by invitation): The pigment changes in frog larva; deprived of the 



epithelial hypophysis. 43 (1418). 

 P. E. Smith (by invitation): On the reaction of the pigment cells in normal and 



albinous frog larva;. 44 (1419). 

 P. E. Smith (by invitation): Upon the experimental exchange of skin transplants 



between normal and albinous larva. 45 (1420). 

 P. E. Smith (by invitation): On the effects of ablation of the epithelial hypophysis 



on the other endocrine glands. 46 (1421). 

 William deB. MacNider: On the occurrence of degenerative changes in the liver in 



animals intoxicated by mercuric chloride and by uranium nitrate. 47 (1422). 

 David I. Macht: On the anti-spasmodic and anesthetic properties of benzaldehyde. 



48 (1423)- 



David I. Macht and S. Matsumoto: A biological test for corpus luteum extracts in 

 vitro. 49 (1424)- 



William C. Stadie (by invitation) : Arterial and venous oxygen in pneumonia and 

 influenza. 50 (1425)- 



The Proceedings of the Society for Experimental Biology and Medicine are 

 published as soon as possible after each meeting. Regular meetings of the Society 

 are held in New York on the third Wednesday of the months of October to May 

 inclusive. A volume of the Proceedings consists of the numbers issued during an 

 academic year. 



The price of Vols. I, II and III is four dollars each, of Vol. IV to current 

 volume is two dollars each, postage prepaid. The price of copies of the proceedings 

 of any meeting is thirty cents each, postage prepaid. Subscriptions are payable in 

 advance. 



President — Gary N. Calkins, Columbia University. 



Vice-President — George B. Wallace, University and Bellevue Hospital Medical 

 College. 



Secretary-Treasurer — Holmes C. Jackson, Univer.-ity and Bellevue Hospital 

 Medical College. 



Additional members of the Council — Henry C. Sherman, Columbia University, 

 and J. W. Jobling, Columbia University. 



Managing Editor — The Secretary- Treasurer, 338 East 26th St.. New York City 



