THE IMPLEMENTS OF THE FARM. 11 



a shaft carrying brushes or screw discs over the delivery 

 holes is made to revolve (and so push out the seed), by 

 means of toothed or chain gearing connected with the sup- 

 porting wheel of the barrow. In potato drills the tubers 

 are placed in a hopper, out of which they pass by a slide 

 (regulated to suit the size) on to a sparred incline which 

 feeds them into cups forming an endless chain. These 

 by passing over a pulley discharge potato after potato into 

 a spout, down which they are dropped into a furrow opened 

 by a ridge plough. Two small mouldboards follow and 

 cover the tubers in each row. 



Horse Hoes have a two-fold function to perform cutting 

 weeds and loosening the soil between the rows of drilled 

 crops. Hoes for corn crops have sometimes a seed barrel 

 attached to them for sowing small seeds, as rye-grass and 

 clover. For controlling the hoes in this case the hoe frame 

 is independent of, but hangs from, the main frame that 

 carries the wheels and shafts. The two wheels should have 

 each an adjustable axle to slide out and in, so as to permit 

 their being set wider or closer to suit the drills to be hoed. 

 The wheels are as far apart as those of the drill by 

 which the corn was sown, and the same number of rows- 

 are hoed together as were sown together. The levers 

 should be fixed alternately to two cross bars, one in 

 front of the other. The levers can thus be of equal 

 length, a pair for each drill, the one carrying a right-hand 

 hoe and the other a left-hand one. The weights upon the 

 levers have thus an equal pressure, and the distance between 

 the levers, laterally on the cross bars and longitudinally 

 between the right and left-hand hoes can be adjusted so as 

 to effect a perfect clearance. Some hoes are in the form of 



