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The Guide to Nature 



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The Geography of Illinois 



By DOUGLAS C. RIDGLEY 



Professor of Geography in the Illinois State Normal University 



The author's aim is to provide an authoritative study of the state, presenting in 

 compact form the wide range of physical influences which make up the geographic 

 environment in which men live. 



The natural features and natural resources of the state are treated in some detail. 

 The great occupations of mankind — agriculture, mining, manufacturing, trans- 

 portation, and trade — are discussed with sufficient fulness to give an adequate 

 idea of their development and present importance within the state. The popula- 

 tion census of 1920 for Illinois is treated in a final chapter. The book is designed 

 to be of interest to -the busy citizen who wishes to know his state as a unit in its 

 present-day activities ; to teachers and pupils who would know Illinois well enough 

 to interpret other regions in comparison with the home state; to all who wish to 

 learn the reasons for the high rank of Illinois in many lines of human endeavor. 



A bounds with drawings, maps, illustrations, and colored insert maps 

 Cloth; $2.50, postpaid $2.60 



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