720 



THE COMPLETE GRAZIER. 



BOOK VIII. 



Rollers are constructed now almost exclusively of cast iron ; and of 

 various sizes, according to the respective purposes for which they are 



Fig. 274. Whippletrees, for Two Horses Abreast. 



Fig. 275. Whippletrees, for Three Horses Abreast in Tubular Iron. 



Fig. 276. Solid Iron Equalising Whippletrees. 



Fig. 277. Iron Roller. 



designed. The common rollers, generally used for pasture-lands, are 

 from fifteen to thirty inches in diameter, and about six to eight feet in 

 length. 



