232 



will perceive, the tree being drawn root foremost, the marked 

 side will directly face the opposite quarter. 



While this arrangement is proceeding, which does not 

 occupy above a few moments, two workmen rapidly ascertain, 

 or fix the exact site of the tree, in its new situation, which 

 till now has been marked out, only by a single stake driven 

 into the ground. This is a still speedier process than the 

 foregoing, and is called " setting off the tree." The two 

 workmen, each %vith a stake in his hand, place themselves 

 in different quarters, about five or six yards from the pit, the 

 one, we shall say, on the north, and the other on the west 

 side, so as to be able to describe two lines at right angles 

 with each other, and to keep clear of the path or direction 

 of the machine. Then, according to the military way of 

 taking objects to move upon in the field, they assume the 

 stake in the pit as a mutual centre, and some tree, or other 

 object at no great distance, as a second object ; and putting 

 down their own stakes as a third, they describe a right line 

 with each of the three. Thus, the two lines, marked out 

 by these offsets, will intersect each other at right angles, or 

 nearly so, in the pit, and the point of intersection will be the 

 position of the tree. The stake in the pit may then be re- 

 moved, for the admission of the machine, and a small piece 

 of greensward put down in its stead, so that the tree may 

 be dropped, with mathematical precision, on the spot intended. 



With single trees in the park, this sort of accuracy may 

 sometimes be of small moment : but, where a particular 

 effect is to be produced by one tree, or by the combination of 

 several trees as a group, it maybe of considerable consequence ; 

 and, as it takes up only a moment, the workmen should 

 always be made to practise it. It tends to give them habits 

 of accuracy in their work, and teaches them the value and 

 importance of juxtaposition, when it becomes necessary to 

 study it. 



Meanwhile the driver, as directed, makes the proper circuit 



