THE WHEAT CTJLTUEIST. 



291 



teeth on one side of the harrow into the soil farther 

 than the teeth enter on the opposite side. The harrow 

 is drawn hj the arm that is 

 bolted to the centre of the 

 implement. As the teeth 

 on the side where the wheel 

 isj take a ranker hold of the 

 ground than the teeth of the 

 opposite side, the teeth that 

 enter the ground the deep- 

 est, hold that side of the har- 

 row back, while the other 

 side is drawn forward. By 

 this means, the harrow has 

 a compound movement — a 

 motion forward and a rotary 

 motion. The harrow can 

 be made to rotate in either 

 direction by changing the 

 travelling wheel. The arm 

 that supports the travelling 

 wheel is secured to the mid- 

 dle of the harrow in such a 

 manner that the wheel can 

 be placed on either side of 

 the harrow. In harrowing 

 along a hollow, or dead 

 furrow, this harrow can be 

 made to rotate toward the 

 lowest place, so as to fill it 

 up with sods and lumps. 

 When harrowing sod ground, the harrow can be made 

 to rotate the same way the furrow slices are turned, or 



Fig. 37.— Monroe's Eotary Harrow. 



