POSITIONS OF ALL KINDS| 
Never was the demand so great for qualified teachers and 
specialists. For ten years we have given our time and 
energy to this work. Write fer our free literature. State 
qualifications briefly. 
Co-operative Instructors’ Association 
Marion | - - - Indiana 
Bee caotubs Ones by 
iy BAILEY WILLIS 
Compilation Edited by 
\GISTS and all readers of geologic 
erature will welcome the publication, 
-The.Summer Quarter 
Courses are the same in educational and 
credit value as those offered in other 
quarters of the year. 
The colleges, the graduate schools and in pro-. 
fessional schools provide courses in Arts, Literature, 
Science, Commerce and Administration, Educa- / 
tion, Law, Divinity, Medicine, and Social Service 
Administration. 
Ideal place for recreation as well as study, golf, 
tennis, rowing, etc. Two great parks a Lake 
Michigan within walking distance. 
Students may register for either term or both. 
1st Term—June 20-July 27 
2d Term—July 28-Sept. 2 
Write for complete announcement 
Che Unitersity of Chiragu 
BOX 523--FACULTY EXCHANGE 
CHICAGO, ILLINOIS 
ae the present state of Enuleiee 
i ion concerning many of the funda- 
U iversity of Chicago Press 
. Illinois 
By SAMUEL WENDELL WILLISTON 
Professor of Paleontology in the University of Chicago 
necessary scientific Sas of our recone ne concerning the ou of 
eas, lakes, and rivers of past and present times. While no attempt has been 
€, Save incidentally, to discuss the strictly terrestrial reptiles, twelve of the four- 
ucture, habits, geological distribution, etc. Unlike most of the books for 
general reader treating of “ancient monsters,” the present work is by an author 
has ee a years in the a and laboratory in the collection and study 
numerous sinisreitions. in tree part fron the pen or brush of the author 
, include not only living types and twenty-four restorations of extinct forms, 
0O many figures elucidating the structure and habits of the animals. 
viii++252 pages, royal 8vo, cloth; $3.00, postpaid $3.20 
: | UNIVERSITY OF CHICAGO PRESS 
ILLINOIS 
