CONTENTS. 



17 (160). An experiment on the localization problem in the egg of Cerebratulus. 



By Naohid ' Yatsu. 



18 (161). Experiments upon the total metabolism of iron and calcium in man. 



By H. C Sherman. 



19 (162). The cause of the treppe. By Frederic S. Lee. 



20 (163). The influence of the red corpuscles upon the viscosity of the blood. 



By Russell Burton-Opitz. 



21 (164). A new recording stromuhr, with demonstration. By Russell Bur- 



ton-Opitz. 



22 (165). The influence of gelatin upon the viscosity of the blood. By Rus- 



sell Burton-Opitz. 



23 (166). The hemolytic effects of organ and tumor extracts. By Richard 

 Weil (by invitation). 



24 (167). The enzymotic properties of diplococcus intracellularis. By Simon 

 Flexner. 



25 (168). On the supposed existence of efferent fibers from the diabetic center 

 to the liver. By J. J. R. Macleod and C. E. BriggS. 



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