SCIENCE— ADVERTISEMENTS 



THE 

 PRINCIPLES OF 

 STRATIGRAPHY 



BY 

 AMADEUS W. GRABAU. S.M., S.D. 



PROFESSOR OF PALEONTOLOGY IN 

 COLUMBIA UNIVERSITY 



°° Should be on the reference shelf of every col- 

 Sege, normal echool, and large high school in the 

 United States."— /ourna/ of Geography. Vol. XI 11, 

 Jan. 1915. 



See. I ISO paget, 264 illamtration: Prict, fT.SO 



D*acriptiT« Circular Sent np»n Requeit 



k. G. SEILER & CO. 



NEW YORK CITY 



The Ellen Richards Research Prize 



The Naples Table Association for Promoting 

 Laboratory Research by Women aimounces the offer 

 of a research prize of $1000.00 for the best thesis 

 written by an American woman embodying new ob- 

 servations and new conclusions based on independent 

 laboratory research in Biology (including Psy- 

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 before 1916 will not be considered and theses pre- 

 sented for a Ph.D. degree are not ehgible. Theses 

 offered in competition must be in the hands of the 

 Chairman of the Committee on the Prize before 

 February 25, 1918. Application blanks may be ob- 

 tained from the secretary, Mrs. Ada Wing Mead, 

 823 Wayland Avenue, Providence, R. I. 



THERESA SEESSEL RESEARCH 

 FELLOWSHIPS 



to promote original research in biological studies 



YALE UNIVERSITY 



TWO FELLOWSHIPS, yielding an income of $1000 each, 

 open to men or women. Preference \b given to oandidatea 

 who have already obtained their Doctorate, and have demon- 

 strated by their work fitnees to cany on suceasfuUy original 

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 panied by reprinta of scientific publications and letters of 

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BEING WELL BORN 



s> 

 PRORESSOR M. R. QU VER 



University of Wisconsin 



This is the best brief treatment of the problem of heredity 

 and eugenics that exists. Many of the leading colleges and 

 universities in the United States are using it as a text-book 

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$1.25 per volume 



The Bobbs=Merrill Company 



INDIANAPOLIS 



