CONTENTS 



OSTERHOUT, W. J. v., and Haas, A. R. C. On the dynamics of pho- 

 tosynthesis 1 



OsTERHOUT, W. J. V. A method of studying respiration 17 



Uhlenhtjth, Eduard. The antagonism between thyrmd and para- 

 thyroid glands 23 



Uhlenhuth, Eduard, Further proof of the existence of a specific 



tetany-producing substance in the thymus gland 33 



Packard, Charles. Difference in the action of radium on green 



plants in the presence and absence of light 37 



LoEB, Jacques. Amphoteric colloids. I. Chemical influence of the 



hydrogen ion concentration 39 



Brooks, S. C. A theory of the mechanism of disinfection, hemolysis, 



and similar processes 61 



LoEB, Jacques. The law controlling the quantity of regeneration in 



the stem of Bryophyllum calycinum 81 



Moore, A. R. Reversal of reaction by means of strychnine in pla- 



narians and starfish 97 



Garrey, Walter E. Light and the muscle tonus of insects. The 

 heliotropic mechanism 101 



Boring, Alice M., and Morgan, T. H. Lutear cells and hen- 

 feathering 127 



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