90 
ripening or ripe state, (as they enjoy moat 
kinds of bloom) a row of flowers might he sown 
two or three feet from the wall, for them to feed 
upon, perhaps the Virgins Stock, or Convol- 
vulus Minor, may be mentioned as being proper. 
On a fine warm day, when the insects are feeding 
on the bloom, the whole may either be well 
watered with the Mixture here before -mentioned, 
or pull the flowers up and destroy them. 
Fumigation is also much recommended. 
Harrison directs, as for the Green Fly, when 
in an active state, fumigation with tobacco of his 
own growing, and moist pea straw together, ayd 
apply the Mixture in autumn, which is mentioned 
on the Aphis attacking Peaches and Nectarines. 
Nothing more can be said in favour of these 
directions respecting their utility than what has 
already been adverted to upon the Red Spider, as 
the effects produced are much the same. 
PliANT Louse, (Aphis .) — This insect appears 
upon these trees as soon as their buds exhibit 
the least symptom of green. In point of shape 
and size it is similar to those described on Apples, 
but not of the same species, for those on Apples 
are oviparous at one time and viviparous at other 
times, while those generally infesting Peach and 
Nectarine trees appear to be always vivipai’ous ; 
for although we sometimes find Aphides’ eggs on 
those trees, it is most probable that they are 
deposited by the offspring of some other perfect 
species, wliich happen to alight at the time of 
