no 



FOR BETTER CROPS 



always sure to run; you had simply to throw In the switch, open 

 the throttle, give the wheels a half turn, and it was off. But if 

 it was off, it was usually for a few times only, and then the 

 trouble began. And why the trouble? For no other reason than 

 that the operator didn't know the principles of his machine. 

 He hadn't been told that the charge of gasoline had to be diffused 

 Into a very weak gas, that this gas had to be compressed to 

 about 60 pounds per square inch before it would ignite, that if 

 the gas contained too much gasoline it would not explode, and a 

 number of other little things which are necessary to make an 

 automatic motor. 



Spraying fruit trees 



But L,on^ Before This Time the dealer has learned that he 

 must know his machine by heart, must know the internal as 

 well as external workings. Not only must he know his own 

 machine, but he must also know his competitor's. But what of 

 all this knowledge on the part of the dealer? Does It help the 

 farmer? It certainly does, for because of this information which 

 the dealer has given out, the farmer takes a much broader 

 view of an engine. He knows it is a success if properly handled 

 and in many instances he knows the principles of the machine. 

 And if he does not know the principles, he admits his ignorance 



