CONTENTS 



OsTERHOUT, W. J. V. Comparative studies on respiration. VII. 



Respiration and antagonism. Introductory note 1 



Brooks, Matilda Moldenhauer. Comparative studies on respi- 

 ration. VIII. The respiration of Bacillus suhtilis in relation to 

 antagonism 5 



GusTAFSON, F. G. Comparative studies on respiration. IX. The 

 effects of antagonistic salts on the respiration of Aspergillus niger 17 



Redfield, Alfred C, and Bright, Elizabeth M. The relative 



physiological effects of j8-rays and 7-rays upon the egg of Nereis 25 



Redfield, Alfred C, and Bright, Elizabeth M. The relative 

 physiological effects of /3-rays of different velocities 31 



Chambers, Robert. Changes in protoplasmic consistency and their 

 relation to cell division 49 



Zeleny, Charles. A change in the bar gene of Drosophila involv- 

 ing further decrease in facet number and increase in dominance 69 



Gaskell, J. F. Adrenalin in annelids. A contribution to the com- 

 parative study of the origin of the sympathetic and the adrenalin- 

 secreting systems and of the vascular muscles which they regulate 73 



LoEB, Jacques. Electrification of water and osmotic pressure 87 



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