GROWING TREES AND FRUITS IN DRY AREAS 365 



of Montana, for instance, it is scarcely possible to find a 

 windbreak or a grove at the present time. Nothwith- 

 gtanding, the following may be said meanwhile with safe- 

 ty: (1) Windbreaks and trees may be grown with suc- 

 cess without the aid of applied water; (2) that the suc- 

 cess in growing them will vary greatly with the condi- 

 tions, and (3) there are instances in which the aid of 

 applied water is essential to success. 



DRY LAND YOUNG APPLE ORCHARD. 

 On Shore of Flathead Lake, Montana. 

 Courtesy Great Northern Railway Co. 



That windbreaks and trees may be grown on nearly 

 all the tillable land of the semi-arid area may be safely 

 assumed from the following: (1) Certain forms of trees, 

 or at least of shrub life, grow on much of the unbroken 

 area without the aid of man, as witnessed in the sage 

 brush and other forms of tree life that maintain an exist- 

 ence in areas where even grass cannot maintain a foot- 

 hold. In some areas where the precipitation is in the 

 neighborhood of 10 inches, as for instance central Oregon, 



