SCIENCE. 



A Weekly Journal devoted to the Advancement 



of Science. 



Editorial Committee: S. Newcomb, Mathematics ; R. S. Woodward, Mechanics; 

 E. C. Pickering, Astronomy ; T. C. Mendenhall, Physics; R. H. Thurston, 

 Engineering; Ira Remsen, Chemistry; Joseph Le Conte, Geology; W. M. 

 Davis, Physiography; O. C. Marsh, Paleontology; W. K. Brooks, Inverte- 

 brate Zoology ; S. H. Scudder, Entomology ; C. Hart Merriam, Vertebrate 

 Zoology; N. L. Britton, Botany; Henry F. Osborn, General Biology; H. 

 P. Bowditch, Physiology; J. S. Billincs, Hygiene; J. McKeen Cattell, 

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



SCIENCE holds the position in America that is held 

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 of American men of science. Science is making rapid 

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