that I keep the net in iny right hand, and the 
moment an insect was driven from its place, I 
swung the net in the direction opposite to that in 
which it flies ; if I missed it the first attempt the 
second generally succeeded.” 
A person is employed to shake one branch of 
the standard trees at a time, not to drive too many 
from their retreat at once, and another is ready 
with the net to destry them ; and for wall trees, he 
dislodges them with a willow branch, by wishing 
the trees. He calculates that, by killing “ 200 
insects, there will be no less than 10,000 eggs 
destroyed or prevented;” which, he says, a per- 
son may do in a few hours. 
This plan I am not able either to approve 
or disapprove, as I have never entered into the 
merits of it, but it is evident, when the parent is 
destroyed before establishing her progeny, the 
increase is pi’eveiited. The operation, however, 
it must be confessed, is very tedious, and the 
operator must be made acquainted wiUi the proper 
periods to perform it, or otherwise, if the emago 
has its liberty too long, after arriving at perfec- 
tion, the egg will be voided, and then destroying 
the Moth will be of no use, as in that state no 
injury is committed. If this plan is worth atten- 
tion, I think it would be equally applicable to 
various Butterflies and large Moths. 
The Spider, oy Acarus . — The various species 
that have come under my notice, consist of four, 
