A Graphic Svionmai^ of American Agriculture. 



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FIG. 3. — This map shows the topography of the luited Siai< s m a geuoralized way. 

 It is a photograph of a rolicf model of the United States supplied by the United ^tates 

 Geological Survey. The mouutainous character of the West, exc(>pt the Great Flains 

 Region, is clearly sh(rwn ; but the Jiiap fails to show the high altitude of much of the 

 West, particularly of the Hockv Mountain and Arid Intermonntain I'lateiiu regions. 

 Owing to the altitude, these regions have a imich cooler climate fbaii corresponding lati- 

 tudes in the East. The vast expanse of the Mi.s.sissippi Valley, with its level to rolling 

 Burface, except for the Ozark uplift in the lower central portion, should be especially 

 ]i«te<l. 



