CONTENTS 



Northrop, John H. Does the kinetics of trypsin digestion depend on 

 the formation of a compound between enzjone and substrate?. . . . 487 



HussEY, Raymond G. The influence of x-rays on the properties of 

 blood 511 



Amberson, William R. Kinetics of the bioluminescent reaction in 



Cypridina. I • . . . . 517 



Amberson, William R. Kinetics of the bioluminescent reaction in 



Cypridina. II 535 



Carlson, A. J. A Abte on the action of curare, atropine, and nicotine 

 on the invertebrate heart 559 



Cole, William H. The effect of temperature on the phototropic 

 response of Necturus 569 



Macht, David L, and Livingston, Marguerite B. Effect of cocaine 

 on the growth of Lupinus albus. A contribution to the comparative 

 pharmacology of animal and plant protoplasm 573 



Palmer, Walter W., Atchley, Dana W., and Loeb, Robert F. 

 Studies on the regulation of osmotic pressure. 11. The effect of 

 increasing concentrations of albumin on the conductivity of a 

 sodium chloride solution 585 



Loeb, Robert F., Atchley, Dana W., and Palmer, Walter W. On 

 the equilibrium condition between blood serum and serous cavity 

 fluids 591 



Hitchcock, David I. The colloidal behavior of edestin 597 



Loeb, Jacques. The elimination of discrepancies between observed 

 and calculated p.d. of protein solutions near the isoelectric point 

 with the aid of buffer solutions 617 



Loeb, Jacques. Electrical charges of colloidal particles and anomalous 



osmosis. II. Influence of the radius of the ion 621 



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