S6 SOIL, MANURES, SITUA TION, AND ENCLOSURES. 



servation and from winds ; but as intruders scarcely ever at- 

 tempt to pass where they cannot look through, perhaps they 

 may yet be used as efficient barriers. The American Arbor- 

 Vitae is well adapted for this purpose, but like the buckthorn 

 it will not grow well in the shade ; hence when closely sheared 



FIG. 80. 



Fig. 81. 

 Trimming Hedges, 



Fig. 82. 



the interior branches are bare. Instead, therefore, of being 

 sheared in the common way it should be shortened back. 

 The close growth of a smoothly-shorn surface darkens and 

 kills the interior foliage as shown in Fig. 80. Fig. i?i repre- 

 sents the same shortened back, or rather thinned back, admit- 

 ting the light within. Fig. 82 shows 

 how this is done, the cut being made 

 at a fork b, or still shorter at a. 



ft J. 83.— Badly Pruned Hedge. 



Fig. 84.— Badly 

 Pruned. 



Pig. 85.— Proper 

 Pruning. 



The hemlock, although hardly stout enough for a hedge until 

 it has grown many years, forms one of the most perfect and 

 beautiful screens in existence, and it would prove a fine shelter 

 for trees against the wind. Its fresh deep-green color is un- 

 surpassed ; and its denseness of growth in consequence of its 

 quality of growing in the shade is scarcely equalled. The 



