J72 THE HOT-HOUSE. [Fee. 
were painted at the same time it would be better. Also, it might 
be serviceable, if a small fire was made in the pine pit with charcoal 
and sulphur, and the house shut up an hour or two to keep in the 
steam. But in case there are vines, or other plants, growing in 
the hot-house, this last operation must be omitted. 
If the above work cannot be done in one and the same day, the 
pine plants may with great safety be set in a dry airy place for a 
day or two, provided they are not put into heaps, which would 
greatly damage them in a short time. 
The mould intended for the pine plants at the first potting should 
be light and fine; and I would recommend that the pots be small 
in proportion to the size of the plant, that each plant may be what 
Gardeners term tjnderpottedj they will strike root both sooner 
and better than if put into larger pots, and at their next shifting 
they will go into proper-sized pots with their balls and roots 
entire. 
After the pine plants are replaced in the hot-house, it will be 
proper to shade the glasses in the middle of the day whenever the 
weather is warm and clear. The house should be constantly kept 
to a great degree of heat, which will be the means of making the 
plants strike sooner and stronger, it being evident that they cannot 
draw themselves weak while in an inactive state: however, as soon 
as the plants are perceived to grow, it will be necessary to give 
them by degrees a greater quantity of air. 
Great care should be taken to prevent the roots of the plants 
from being injured by an over-heat of the tan, which may be done 
by raising the pots in case the tan should heat violently. 
Other Insects found in Hot-houses, with the methods of destroying' 
them. 
Besides the different species of insects which are found so per- 
nicious to the pine-apple plants, there are other kinds that infest 
most stoves, which frequently prove very troublesome; and although 
they are not injurious to the pine-apple, are yet very prejudicial to 
most other plants kept there, either for use or ornament. 
1. The Aphis. This insect is of the order HemiptePvA. Cha- 
racters. Rostrum bent inwards. Antennae, setaceous and longer 
than the thorax. Wings, four on the males; females none. Feet 
six. They have generally two little horns or hairs placed on the 
hinder part of their abdomen. 
Roses and various other plants, are very subject to be overrun 
with these insects, and if no means are used to extirpate them, they 
will in a short time take such entire possession of the plants, that 
every part of the young wood will appear to be covered with them. 
They are commonly called lice. Many kinds of flowers and exotic 
plants which are kept in stoves are very subject to be annoyed with 
them. 
These are easily destroyed three ways. 1. By fumigating the 
house with tobacco. 2. By dusting the infected plants with fine 
snuff or tobacco dust. 3. By a decoction or infusion of tobacco. 
