82 The Principles of Fruit-growing. 
in that region demand a free circulation of air from 
the lakeward, while desiring protection from the east. 
(Cf. Mr. Cook’s letter in Table IV., page 70.) This 
experience, however, does not argue that wind-breaks 
should be entirely abolished on the lakeward sides 
of plantations, but that such breaks should be thin 
enough to allow of the passage of wind, while break- 
ing its force. In such places, a wind-break should 
be simply a wind-break, not a wind-stop. 
The diagrams (Figs. 4 and 5) admirably illustrate 
Fig. 4. The deflection of winds over a lake bluff. 
these remarks. Fig. 4 is a diagram of a high bank 
on Lake Michigan. The strong winds from the west- 
ward strike the bank and are deflected upward, and 
strike the surface again at some distance from the 
cliff, leaving a comparatively still space at A. Decay- 
ing substances on the beach of the lake are often 
more obnoxious to those living half a mile or more 
from the lake than to those living near the bank. 
Fig. 5 is a diagram showing a similar deflection of 
wind and a comparatively still area (A) by a very 
dense wind-break. 
