CONTENTS 



Hecht, Selig. Photochemistry of visual purple. I. The kinetics 



of the decomposition of visual purple by light 1 



OsTERHOUT, W. J. V. The mechanism of injury and recovery. ... 15 



Smith, Theobald, and Smith, Dorothea E. Inhibitory action of 

 parat5^hoid bacilli on the fermentation of lactose by Bacillus 

 coli. 1 21 



Gustafson, F. G. Comparative studies on respiration. XII. A 

 comparison of the production of carbon dioxide by Penicillium 

 and by a solution of dextrose and hydrogen peroxide 35 



Garrey, Walter E. Dynamics of nerve cells. I. The tempera- 

 ture coefficient of the neurogenic rhythm of the heart of Limu- 

 lus Polyphemus 41 



Garrey, Walter E. Dynamics of nerve cells. II. The tempera- 

 ture coefficients of carbon dioxide production by the heart gan- 

 gUon of Limulus polyphemus 49 



Crozier, W. J. On the role of an integumentary pigment in photo- 

 reception in Eolothuria 57 



Carey, Eben J. Studies in the dynamics of histogenesis. II. Ten- 

 sion of differential growth as a stimulus to myogenesis in the 

 esophagus 61 



Loeb, Jacques. Ion series and the physical properties of proteins. 



1 85 



Lillie, Ralph S. The recovery of transmissivity in passive iron 

 wires as a model of recovery processes in irritable living systems . 

 Part 1 107 



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