COCK-CHAFER. 
259 
sistance of his servant he collected eighty bushels 
of cock-chafers upon his own farm. 
We are much indebted to our rookeries for pre- 
venting the increase of these destructive insects. 
While the land is ploughing the rooks may be ob- 
served to follow at a little distance, and pick up the 
grubs and other worms from the newly turned up 
furrow. In this manner great numbers are destroyed 
before they arrive at their winged state ; and when 
that period takes place they may be easily reduced 
by shaking the trees where they lodge, in the mid- 
dle of the day ; for at that time they are quite stu- 
pid, and will fall to the ground without attempting 
to fly away. Those who employ themselves in this 
manner perform a very acceptable service to the 
husbandman, by crushing the future progeny in 
the body of the parent insect. 
