PLOWING, SUBSOILING, AND TRENCHING. 177 



The reins may be made as shown in Fig. 90, or, with a tract- 

 able team I have usually found it sufficient to tie the three bits 



three Horaes. 



Fig. 90. — Set of Reins for Three Horses. 



together, and to pass a single rein to the outside rings of the bits 

 of the two outside horses. It is especially desirable that one 



HOIBEOOK'S PATENT PLOW CLEVIS J 



For 3 Horses Abreast. 



Fig. 91. — Holbrook's Patent Plow Clevis, for Three Horses abreast. 



12 



