342 



Harnessing the Colt 



When the loads are heavy and there is consider- 

 able backing to do, the Boston hold-back and backer 

 is recommended. With this form of hold-back the 

 backing is accomplished with the breeching by means 



Fig. 100. — Heavy work harness, with Boston backer. 



of tugs extending from the breeching to the jockey 

 yoke, which is attached directly to the neck-yoke 

 (Fig. 100). The draft is in a straight line from the 

 end of the tongue to the quarters, thus giving the 

 horse his maximum efficiency in backing. This is 



