By THOMAS C. CHAMBERLIN 



Head of the Department of Geology, The University of Chicago 



One of " The University of Chicago Science Series' 



xii4-272 pages, 8vo, cloth; $1.50 net, postage extra (weight 1 lb. 6 oz.) 



"In telling the story of this search for the mode by which the earth came 

 into being, we have let the incidents that led the inquiry on from one stage to 

 another fall in with the steps of the inquiry itself. It is in keeping with the 

 purposes of this series of booklets that the motives which set researches going 

 should have their place with the quests that arose from them. . , . „ The final 

 story of the birth of the earth will come only after a time, when the vestiges of 

 creation have been more keenly discerned and more faithfully rendered than is 

 possible now." 



THE UNIVERSITY OF CHICAGO PRESS 



CHICAGO - ~ - - - . ILLINOIS 



The Stimnier Vacalioii Opportoiiity 

 at The University of Chicago 



The Summer Quarter 191 9 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 1 6-July 23 Second Term July 24- August 29 



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



THE UNIVERSITY OF CHICAGO, CHICAGO, ILL. 



