CONTENTS. 



R. A. Morison (by invitation): Changes in the electrocardiogram due possibly to 



alterations in blood volume. 43 (1221). 

 T. S. Githens: The influence of ergotoxin on the pupil of the rabbit. 44 (1222). 

 R. Cecil and Richard Weil: The excretion of Congo Red by the stomach. 45 (1223). 

 J. Wheeler Smith, Jr., and W. J. MacNeal: A comparative test of different antigens 



and of different temperatures of incubation in the Wassermann test. 46 (1224). 



E. R. Hoskins and Margaret Morris (by invitation): On thyroidectomy in am- 



phibia. 47 (1225). 



F. H. Pike: The effect of decerebration upon the quick component of labyrinthine 



nystagmus. 48 (1226). 



G. N. Stewart and J. M. Rogoff: The influence of certain conditions on the rate at 



which epinephrin is liberated from the adrenals into the blood. 49 (1227). 



G. N. Stewart and J. M. Rogoff: The proportion in which adrenalin distributes itself 

 between corpuscles and serum in relation to the technique of testing for epine- 

 phrin in blood. 50 (1228). 



Oskar Klotz and Mary W. Spencer: The influence of intravenous inoculations of 

 cholesterin upon blood cells. 51 (1229). 



J. Bronfenbrenner and m. j. Schlesinger: The physical state of antigen as related 

 to the specificity of the Wassermann reaction. (Preliminary communication.) 

 52 (1230). 



Frank P. Underhill, Norman L. Blatherwick and Samuel Goldschmidt: 

 The influence of subcutaneous injections of morphine upon the hydrogen ion 

 concentration of the urine in the dog and rabbit. 53 (1231). 



Donald D. Van Slyke: The determination of oxygen in blood. 54 (1232). 



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