CONTENTS 
Page 
Physiology. — Weber's Law and Antagonistic Salt Action . By Jacques Loeb 439 
Physics. — ^The Polarized Fluorescence of Ammonium Uranyl Chloride 
By E. L. Nichols and H. L. Howes 444 
Anthropology. — ^The Linguistic Classification of Potawatomi .... 
By Truman Michelson 450 
Astronomy. — ^The Light Curve of XX Cygni As a Contribution to the Study of 
Cepheid Variation . . . By Harlow Shapley and Martha Betz Shapley 452 
Genetics. — ^The Feebly Inhibited, III. Inheritance of Temperament; With 
Special Reference to Twins and Suicides . . . By C.B. Davenport 456 
Astronomy. — Second Type Stars of Low Mean Density . By Harlow Shapley 459 
Pathology. — On the Pathological Action oe Arsenicals Upon the Adrenals 
By Wade H, Brown and Louise Pearce 462 
Pathology. — Variations in the Chapj^cter and Distribution of the Renal 
Lesions Produced by Compounds of Arsenic 
By Louise Pearce and Wade H. Brown 463 
Mathematics. — Seven Points on a Twisted Cubic Curve. . By H. S. White 464 
