IMPLEMENTS OF THE SOIL. 493 



side of the trees, and the roots are thus smoothly cut off, 

 wliile tlie trees remain standing. The plow is of course pro- 

 pelled by horses and guided by two plowmen. It is an 

 admirable implement for root-pruning young trees, espe- 

 cially evergreens, in place of the old practice of removing 



Fig. 163.— TREE-DIGGING PLOW. 



them in order to cause them to throw out fibres and make 

 balls suited to future removal. 



The One-IIorse Cart. — This is an indispensable machine 

 in the nursery, orchard, or large garden. Four-wheeled 

 wagons are difficult to unload, and recpiire a great deal of 

 space to turn in. The cart can be turned in a circle of 

 twelve or fourteen feet, and the load discharged in a mo- 

 ment, simply by taking out the key that fastens the ))ody 

 to the shafts, throwing it uj), and moving the horse forward. 

 Our carts are about six feet long and three wide in the 

 body, shafts six feet long, wheels four and a half feet 

 high, and tire two and a half wide, to prevent them from 

 sinking into the ground. The box is about a foot deep, 

 and when large loads are to be carried a spreading board 

 is put on the top with brackets. Cost from ^30 to -^50. 



TJic Wheelbarroio (fig. 163).— Every man who has a 

 rod of ground to cultivate should possess this m*\chine. 

 In small gardens it is sufficient for the conveyance of all 

 manures, soils, products, etc., and in larger places it is al- 



