ARID AGRICULTURE. 



51 



The steel lays are useful, however, in many soils, 

 and if a farmer has a soil upon which he can use 

 both kinds he can take advantage of all these 

 conditions. A modification of the old sidehill 

 plow is the new two-way plow with which the 

 field may all be turned from one side and avoid 

 extra tramping as well as dead furrows and back 

 furrows. 



Where fields are large enough and long lands 

 can be laid out, plowing by steam or gasoline is 

 being adopted in many parts of the West. On 

 our dry prairies at considerable distances from 

 water and coal supply, steam plowing proves ex- 



Plate V. Plowing First-Year Stubble Eleven Inches Deep. 



