SCIENCE 



Editorial Committee : S. Newcomb, Mathematics ; E. S. Woodwaed, Mechanics ; E. C. Pickering, 



Astronomy; T. C. Mendenhall, Physics; R. H. Thurston, Engineering; Ira Remsen, Chemistry; 



J. Le Conte, Geology; "W. M. Davis, Physiography; O. C. Marsh, Paleontology; W. K. Brooks, 



C. Hart Mekeiam, Zoology; S. H. Scuddee, Entomology; C. E. Bessey, N. L. Britton, 



Botany; Henry F. Osboen, General Biology; C. S. Minot, Embryology, Histology; 



H. P. Bowditch, Physiology ; J. S. Billings, Hygiene ; J. McKeen Cattkll, 



Psychology; Daniel G. Brinton, J. W. Powell, Anthropology. 



Friday, September 16, 1898. 



CONTENTS: 

 TJie Development of Fhotography in Astronomy {!■) : 

 Professor E. E. Barnard 341 



The International Congress of Zoology 353 



Third International Congress of Applied Chemistry, 

 Vienna, 1898: Dr. Ferdinand G. Wiech- 

 MANN. 360 



American Mathematical Society : Peofessoe F. N. 

 Cole 362 



Boston Meeting of the National Geographic Society : 



W J M 363 



Ou/rrent Notes on Anthropology ;— 



The Castings from Benin ; Craniological Informa- 

 tion Desired; Ethnography of the Upper Para- 

 guay; Motives of Suicide: Professor D. G. 



Beinton 365 



Notes on Inorganic Chemistry: J. L. H 366 



Scientific Notes and News 367 



University and Educational News 370 



Discussion and Correspondence : — 



Pre-Columbian Music Again : PROFESSOR 0. T. 

 Mason. A Curious Optical Illusion connected 



with an Electric Fan : De. F. C. Kenyon 371 



Scientific Literature : — 

 Barnes on Plant Life : Professor Charles E. 

 Bessey. Wagner on Grundprobleme der Natur- 

 wissenachaft: E. A. Strong. International Cata- 

 logue of Scientific Literature : PROFESSOR D. G. 



Brinton 372 



Scientific Journals 376 



New Books 376 



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

 for review should be sent to the responsible editor, Profes- 

 sor J. McKeen Cattell, Garrison-on-Hudson, N. Y. 



TSE DEVELOPMENT OF PHOTOGRAPHY IN 

 ASTE0N03IY (/.).* 



The American Association for the Ad- 

 vancement of Science has now completed 

 an existence of half a century. It has be- 

 come one of the leading scientific institu- 

 tions of this country. Since its organization 

 fifty years ago the world has advanced with 

 wonderful rapidity in all directions, and 

 especially in the various fields of science. It 

 is hardly too much to say that the scientific 

 progress in the last half century far exceeds 

 all that was done in the preceding thousand 

 years . The life of this Association practically 

 covers the development and comparative 

 perfection of many of the sciences. This 

 is especially true of the wonderful art of 

 photography. At the beginning of the work 

 of this Association the great discovery of 

 making pictures by the natural light of the 

 sun had just been made, and while it aroused 

 a widespread interest all over the world at 

 that time there were very few who dreamed 

 of the great future value of photography in 

 the arts and sciences. One of those who 

 saw something of the future of Daguerre's 

 discovery was the celebrated Scottish as- 

 tronomer Dr. Dick, whose works on popular 

 astronomy are still useful and delightful 

 reading. In his ' Practical Astronomer,' 

 published in 1845, he said : 



*Address of the Vice-President before Section A — 

 Mathematics and Astronomy — of the American Associ- 

 ation for the Advancement of Science, August 22, 1898. 



