TENURE AND USE OF ARID GRAZING LANDS. 



crop farming can not be made to support families on land wh 

 periods of drought lasting one, two, three, and even four or five s 

 sons in succession are known to occur with more or less regularity 

 periods of drought so severe that no known cultivated plants can 

 expected to endure them and produce a crop. 



The approximate geographical distribution of the lands of e; 

 class is shown in the accompanying diagrammatic map (fig. 1). 



LEGEND 



Semi-Arid Area — Where Dry-Farming Dominates 

 Arid-Grazing Area — Where Range Slock Raising Dominates 

 K'.'.'J Desert Area— Where Agriculture oj any Kind u Impossible 



Forest and Woodland Area— Much of. It is Grazed by Range Stock 

 Principal Irrigated Areas of- the West— Sizes somewhat exaggerated 



Fig. 1.— Diagrammatic map of the western half of the United States, showing roughly the geogra 

 distribution of the different classes of land as determined by the dominant agricultural use. 



no place are the boundaries between areas of the different classes 

 well defined as the lines on the map would suggest. Many sn 

 areas of irrigated or dry-farming land occur in the forest and wo 

 land area, and some occur in the arid grazing area. Likewise in 

 semiarid area there are many places, usually of relatively small si 

 where the land can be used only for grazing. Irrigable land is, 

 course, always capable of intensive cultivation and occurs where 



