HARROWS AND WHIPPLETREES. 



719 



the land, or moss pulled out, equally well. Fig. 272 shows the disc 

 harrow, which is very extensively used in the United States, but has 

 not yet gained much hold in this country. Fig. 273 illustrates the 

 form of ridge or saddle harrow for turnip or potato ridges. 



Fig. 272. Howard's Improved Disc Harrow. 



Whippletrees. In some light land districts it is quite common to find 

 no other whippletrees than those which can be worked by two horses 

 abreast. When it is found necessary to attach three horses, either 

 abreast, or two abreast and another as a fore-horse, there are no means 

 of so adjusting, them that each horse does its proper share of work no 



Fig. 273. Ridge Harrow. 



more and no less. Many different forms of whippletrees are made, 

 however, which answer the purpose well, and in figs. 274, 275, 276, we 

 show three useful types made by Messrs. Tasker & Sons, Andover, 

 which can be employed for different numbers of horses without unduly 

 working any of the animals. 



