IMPLEMENTS OF THE SOIL. 



467 



closely planted. The horse should be steady, the man 

 careful, and the whiffle-tree as short as possible, that the 

 trees need not be bruised. It should neither run so deep 

 nor so near the trees as to injure the roots. 



The Cultivator. This, with the plow, obviates the 



Fig 1 . 161. CULTIVATOR. 



necessity of spade-work, and, in a great measure, hoeing. 

 If the ground be plowed in the spring, and the cultivator 

 passed over it once every week or two during the 

 summer, all the hoeing necessary will be a narrow 

 strip of a few inches on each side of the row. The 

 double-pointed steel-toothed, with a wheel in front, as 

 shown in fig. 161, is the best. 



The Tree-Digging Plow. This implement facilitates 

 the work and entirely supersedes the spade in the labor 

 of digging trees of the usual size in the nursery, where an 

 entire plot is to be cleared. " It is constructed (see fig. 

 162) with two beams, one to run On each side of the row of 

 trees, two sets of handles, and a peculiar share, much in 

 shape like the letter U. This share is very sharp, the 

 horizontal part runs under, and the vertical ones on each 



