XII 
THE GUIDE TO NATURE— ADVERTISEMENTS 
A Naturalist in 
# 
The Great Lakes Region 
By Elliott R. Downing 
This new book gives an interesting description of the flora and 
fauna of the Great Lakes region and traces the development of the 
geological and physiographic factors which have affected the dis- 
tribution of the plants and animals. A valuable book for teacher- 
training classes, biology courses, and for students and lovers of the 
out-of-doors. 
“A most engaging - sort of pocket teacher.” 
“It is not a book to be left at home and referred to after a 
hike. The author and publishers obviously had the nature- 
lover in mind when they made it small and thin and bound it 
in a limp cover. There is no excuse now for not being able to 
identify right on the spot the curious things we see, and, in 
addition, to know how they happened to be there.” 
FLEXIBLE BINDING, POCKET SIZE, $3.50, POSTPAID $3.70 
BY THE SAME AUTHOR 
A Source Book of Biological Nature-Study. 
Cloth, $3.00, postpaid $3.20. 
A Field and Laboratory Guide in Biological 
Nature-Study. 
Paper covers, loose leaf, $1.50, postpaid $1.60. 
A Field and Laboratory Guide in Physical Na- 
ture-Study. 
Paper covers, loose leaf, $1.50, postpaid $1.60. 
THE UNIVERSITY OF CHICAGO PRESS 
5915 ELLIS AVENUE CHICAGO, ILLINOIS 
