Summary upon Wind-breaks. 91 
b. The injury from insects can be averted 
by spraying with arsenical poisons. 
ce. The injury from the encroachment of the 
wind-break may be averted, in part at least, by 
good cultivation, and by planting the fruit. si- 
multaneously with the belt. So far as practicable, 
the wind-break should be planted at a distance 
of six rods or more from the fruit plantation. 
4. Wind-breaks are advantageous wherever fruit 
plantations are exposed to strong winds. 
o As a rule, in localities where atmospheric 
drainage will not be seriously checked, the wind- 
break should have a comparatively dense bottom, 
formed by undergrowth or low-branching trees. 
6. The wind-break should never be dense enough 
to force the buds on fruit trees in those localities 
which are subject to late spring frosts, as it may 
sometimes do when it faces the south and acts like 
a southern exposure for the plantation. It is evi- 
dent, therefore, that spruces and other evergreens 
should be planted sparingly in such localities, and 
that deciduous trees which leaf out late in spring 
should be chosen for the wind-break. 
7. In interior places, dense or broad belts, of two 
or more rows of trees, are desirable, while within the 
influence of large bodies of water narrow belts, 
comprising but a row or two, are usually preferable. 
8. The best trees for wind-breaks in the north- 
eastern states are Norway spruce, and Austrian and 
Scotch pines, among the evergreens. Among decidu- 
ous trees, most of the rapid-growing native species 
