The Summer Vacation Opportunity 

 at The University of Chicago 



The Summer Quarter 1919 will receive the added inspiration of profes- 

 sors and instructors returning from war service in many lands. Stu- 

 dents and teachers, interested in keeping abreast of the times or in 

 completing work already begun, appreciate the opportunity of instruction 

 in a regular season of study under members of the University staff. 

 Scholars desiring to prosecute research in the libraries and laboratories 

 will find facilities for work under the most favorable conditions. 

 Courses are offered in all departments and include undergraduate and 

 graduate instruction in Arts, Literature, Science, Commerce and Ad- 

 ministration, Law, Medicine, Education, and Divinity. 



SUMMER QUARTER 1919 

 First Term June 16-July 23 Second Term July 24-Augu8t 29 



Students may register for either term or both. For the complete ANNOUNCEMENT of courses address 



THE UNIVERSITY OF CHICAGO, CHICAGO, ILL. 



On Growth and Form. By D'arcy W. Thompson, C.B., D.Litt., F.R.S. With 408 

 illustrations. Demy 8vo. $6.50. 

 "Professor Thompson has written an interesting and valuable book on a topic of enduring interest. ..... 



Why does the animal kingdom present to us a picture of such infinite variety? .... And why, running 



through the diversities, are there so many resemblances? .... The purpose of Prdfessor Thompsons 



book is to explain the 'must be' of structure." — Times. 



Fossil Plants. A Textbook for Students of Botany and Geology. By A. C. Seward, 

 M.A., F.R.S. , Professor of Botany in the University of Cambridge. Volume III. Pteri- 

 dospermeae, Cycadofilices, Cordaitales, C^xadophyta. \Vith frontispiece and 253 illus- 

 trations. Demy Svo. $5.50. Cambridge Biological Series. 



British Grasses and Their Employment in Agriculture. By S.F.Armstrong, 

 F.L.S., of the School of Agriculture, Cambridge. With 175 illustrations. Demy Svo. $2.00. 



Plants Poisonous to Live Stock. By Harold C. Long, B.Sc, (Edin.), of the Board of 

 Agriculture and Fisheries. With frontispiece. Royal Svo. $2.00. Cambridge Agricultural 

 Monographs. 



Science and the Nation. Essays by Cambridge Graduates, with an Introduction by the 

 Right Hon. Lord Moxjlton, K.C.B., F.R.S. Edited by A. C. Seward, F.R.S., Master 

 of Downing College, Cambridge. Second impression. Crown Svo. $1.50. 



Published by the Cambridge University Press, England 



Q. P. Putnam's Sons, Agents in the United States 

 2, 4 and 6 West 45th Street, New York City 



