ELEMENTARY AGRICULTURE 



Fig. 5. A Clydesdale. 



help a horse pull heavy loads is to put the whiffle- 

 tree low down. It is better to have the doubletree 

 under the tongue for heavy pulling. A farmer 

 once tested this by hitching a horse to a post with a 

 spring balance which would show how many pounds 

 he pulled. When the whiffletree was tied six inches 

 from the ground he pulled six hundred pounds more 

 than when it was three feet from the ground. 



Driving Fast. When a horse has a light load and 

 is driven for speed, the whiffletree should be high. 

 This makes the weight on the horse lighter so there 

 is less strain on his legs and feet. Sometimes you 



