SCIENCE. 



Editorial Cojimittee : S. Newcojib, Slathematics ; R. S. Woodward, Mechanics ; E. C. Pickering, As- 

 tronomy ; T. C. JIexdenhall, Physics ; K. H. Thurston, Engineering ; Ira Remsejj, Chemistry ; 

 Joseph Le Coxte, Geology; W. M. Davis, Physiography; O. C. Marsh, Paleontology; W. K. 

 Brooks, Invertebrate Zoology ; C. Hakt Merriaji, Vertebrate Zoology ; N. L. Britton, 

 Botany ; Hesey F. Osborn, General Biology ; H. P. Bowditcii, Physiology ; 

 J. S. Billings, Hygiene ; J. McKeen Cattell, Psychology ; 

 Daniel G. Beinton, J. W. Powell, Anthropology. 



Friday, Febeuaby 1, 1895. 



CONTENTS: 



Procicdingn of the American Pliysinlogieal Society: 

 ■VVaeeen p. Lombard, Secretary 113 



An Inherent Error in the 1'ieirx of Gallon and W'ci.f- 

 mann on Varialion : W. K. BROOKS 121 



Current Notes on Anthropology [III. ): D. G. Brin- 

 TON 126 



Tchebychev : GEORGE BRUCE ILvlsted 129 



Scientific Literature :— 131 



I'oinearc's Les oscillations electriqiies {II.): 

 M. I. PUPIN. Eicing's The Steam Engine: 

 H. H. THUE.STON. Eudorfps Chemical Analy- 

 sis : Edward Hart. 



Notes and Neics : — • 137 



Paleobotany; A Topographical Atlas; Bibliog- 

 raphy of American Botany ; General. 



Scientific Journals : 139 



Netc Books 140 



MSS. intended fur publication and books, etc., intended 

 for review should be sent to the responsible editor, Prof. J. 

 McKeen Cattell, Garrison on Hudson, N. Y. 



Sabschptions (five dollars annually) and advertisements 

 ■bould be sent to the Publisher of Science, 41 East 49th St., 

 New York, or Lancaster, Pa. 



PROCEEDINGS OF THE AMERICAN PHYSIOLO- 

 GICAL SOCIETY. 

 The American Physiological Society held 

 its Seventh Annual fleeting in Baltimore, 

 Md., December 27tli and 28th, 1894. The 

 mornings Were devoted to the reading of 

 papei-s, and the afternoons to demonstra- 

 tions and to visiting the laboratories of 

 Johns Hopkins University. The success of 

 the meeting was largely due to tlie hospi- 

 tality of Johns Hopkins University, the 

 University Club and friends of the Society 

 residing in Baltimore. 



ELECTION- OF NEW MEMBERS. 



Dr. a. C. Abbot, First Assistant at the 

 Laboratory of Hygiene, University of Penn- 

 sylvania. 



Dr. G. Carl Hubkr, Assistant Professor 

 of Histology and Embryology at the Uni- 

 versity of Michigan. 



Dr. P. A. Levene, of New York City. 



Dr. Franz Pfaff, of Boston. 



ELECTION OF THE COUNCIL FOR 1804-95. 



H. P. BoWDiTCH, I'regident. 



R. H. Chittenden. 



AV. H. Howell. 



F. S. Lee, Secretary and Treasurer. 



W. P. Lombard. 



Reading of Papers and Demonstrations 

 by Invited Guests and Members of the So- 

 cietj'. 

 On the Occurrence of Dkeihyl Sulphide in the 



Urine of the Doij. with a Demonstration of 



Reaction for the Detection of Alkyhulphides 



nf the Serie.t (CnHjn+i )2S. J. J. Abel. 



Dr. Abel demonstrated in a series of re- 

 actions, many of them new, that the vola- 

 tile, odoriferous compound that is liberated 

 when dog's urine is treated with alka- 

 lies is ethyl sulphide (CjH.OiS, and al.xo 

 that the organic sulphides of the series 

 (CnH2n-;i)2S may readily be detected, 

 wherever found, with the help of his reac- 

 tions. 

 On the V»e of the Trichloride of Acetonic Acid 



as An(egthetic for the Laboratory, with Some 



