ilOS 
g’eneral rules, which I trust will, with the in- 
formation given in the preceding pages, enable 
the intelligent and diligent Hoi’ticultiu’ist to free 
himself from those kinds of insects infesting 
Horticultural productions, not particularly speci- 
fied above. 
Aphides. — The difterent species of this 
genus are so exti*emely numerous that there are 
few trees, shrubs, flowers, or veg’etables, which 
at one time or another are not infested by 
them. It may appear almost superfluous to 
give any directions for the preservation of forest 
ti'ees from the various enemies they are subject 
to, but I would just remark, that where a young- 
ornamental tree becomes infested, so as to make 
it an eye sore, a little pains and expense M'ould 
not be ill bestowed in restoiing it to its original 
beauty, especially in grounds of small extent, 
when the trees only exist in limited numbers, 
and where the whole are necessary, for the deco- 
ration of the scene. It may also be of advan- 
tage for some of the tree seedlings, and young 
trees of a more advanced stage of growth, in nur- 
sery grounds, to be relieved from the insects by 
which they are infested. Favourite shrubs and 
arbacious flowers will still more claim our atten- 
tion, to the protection of health and beauty, and this 
can be more readily accomplished, on account of 
their dwarfy growth. I shall content myself with 
adding, that the following rules will be found 
