23 
again overrun by them, and some careless or in- 
different persons may think that the different 
recipes will be of little or no use. But, before 
coming to so hasty a decision, I would desire 
them to try the recipes effectually upon a small 
scale. Let them examine the trees before the 
application, and frequently after; and let those 
kinds of insects which are not discernible with 
the naked eye, be observed through a good micros- 
cope, and it will be readily perceived whether the 
remedies are effectual. Notwithstanding the re- 
cipes communicated by me, or by others, several 
insects will no doubt escape the application of the 
mixture, either by being’ concealed in crevices of 
the trees, in walls, in the earth, or even on the 
leaves, as well as by being in the embryo state ; it 
of course requires much care and diligence to clear 
a garden much infested with them. 
That this may be effectually done, walls must 
be kept well pointed, or they otherwise w'ould 
harbour both the insects and their eggs ; the re- 
moval of shreds of wall trees is also very essential, 
and those intended to be used again should be 
immersed a few minutes in boiling water, for the 
destruction of the eggs and insects. The refuse 
also should be burned, or else put in boiling- 
water; and as some eg'gs and insects may fall 
in taking oft’ the shreds, it will be necessary to 
water the ground well W'ith boiling water, or 
spread a sheet, to catch the insects, previous to the 
performance. 
