322 



DRY-FARMING 



Steam, gasoline, and electricity have all been sug- 

 gested. The steam traction engine is already a fairly 

 well-developed machine and it has been used for 



Fig. 87. Utah drv-farm weeder. 



plowing purposes on many dry-farms in nearly all the 

 secti(_)ns of the dry-farm territory. Unfortunately, 

 up to the present it has not shown itself to be very 

 satisfactory. First of all it is to be remembered that 

 the principles of dry-farming require that the top- 

 soil l^e kept very loose and spongy. The great trac- 

 tion engines have very wide wheels of such tremen- 



