346 



SCIENCE 



[N. S. Vol. XLII. No. 1080 



1. Weher's Law and Antagonistic Salt Action : 

 Jacques Loeb, Rockefeller Institute for 

 Medical Eesearch, New York. 



The author had shown that the ratio of the 

 concentrations of antagonistic ions must re- 

 main within certain limits for the normal 

 functioning of an organism. It is here shown 

 that these limits remain approximately con- 

 stant as the concentration of one of the ions 

 is changed. 



2. The Polarized Fluorescence of Ammonium 

 TJranyl Chloride: E. L. Nichols and H. L. 

 Howes, Physical Laboratory, Cornell Uni- 

 versity. 



The remarkable fluorescence spectrum of 

 this salt is described in considerable detail; 

 observations being made at + 20° C. and 

 — 185°. 



3. The Linguistic Classification of Potta- 

 watomi: Truman Michelson, Bureau of 

 American Ethnology, Washington. 



By study of the so-called " verbal pronouns," 

 which afford most satisfactory classificatory 

 criteria, it is shown that Pottawatomi belongs 

 to the Ojibwa Group of Central Algonquian 

 dialects. 



4. The Light Curve of XX Cygni as a Con- 

 tribution to the Study of Cepheid Variation : 

 Harlow Shapley and Martha Betz Shap- 

 LEY, Mount Wilson Solar Observatory, Car- 

 negie Institution of Washington. 



The form of the maximum of brightness in 

 XX cygni is variable from period to period 

 and thus suggests the hypothesis that the 

 periodic light and spectrum variations in this 

 and other Cepheid variables should be ascribed 

 to internal vibrations producing irregularities 

 in luminosity instead of to double star phe- 

 nomena. 



5. The Feehly Inhibited. III. Inheritance of 

 Temperament; with Special Reference to 

 Twins and Suicides: C. B. Davenport, Sta- 

 tion for Experimental Evolution, Carnegie 

 Institution of Washington. 



A statistical study of 89 family histories, 

 affording 147 matings, leads to the conclu- 

 sion that temperament is inherited as though 

 there were in the germ plasm a factor E 



which induces the more or less periodic occur- 

 rence of an excited condition and its absence, 

 e, which results in a calmness ; also a factor C 

 which makes for normal cheerfulness and its 

 absence which permits a more or less periodic 

 depression, the factors behaving as though in 

 different chromosomes, so that they are in- 

 herited independently. 



6. Second Type Stars of Low Mean Density: 

 Harlow Shapley, Mount Wilson Solar Ob- 

 servatory, Carnegie Institution of Wash- 

 ington. 



Because of its bearing on the question of 

 the order of stellar evolution, the density of 

 stars of the second spectral type is discussed 

 from the standpoint of the dependability of the 

 observation and theoretical work that is the 

 basis of the derivation of occasional extremely 

 low values. 



7. On the Pathological Action of Arsenicals 

 upon the Adrenals: Wade H. Brown and 

 Louise Pearce, Rockefeller Institute for 

 Medical Eesearch, New York. 



That arsenicals of diverse chemical consti- 

 tution exert pronounced pathological action 

 upon the adrenals has not been generally 

 recognized. It appears from these observa- 

 tions that the adrenotropic action of arsenicals 

 is one of the most constant and important fea- 

 tures of arsenical intoxication, and it is sug- 

 gested that therapeutic doses of some arsen- 

 icals may be found to produce definite stimu- 

 lation of the adrenal glands. 



8. Variations in the Character and Distribu- 

 tion of the Renal Lesions produced by Com- 

 pounds: Louise Pearce and Wade H. Brown, 

 Rockefeller Institute for Medical Research, 

 New York. 



Not all compounds of arsenic produce vas- 

 cular lesions; some are capable of producing 

 tubular nephritis; the difference in the patho- 

 genic action being explainable only upon the 

 basis of the chemical constitution of the differ- 

 ent compounds of arsenic. 



9. Seven Points on a Twisted Cubic Curve: 

 H. S. White, Department of Mathematics, 

 Vassar College. 



If seven points on a twisted cubic be joined. 



