April] THE HOT-HOUSE. 365 
the fruiting plants, in particular, will require this. If the bark was 
not turned and fresh tan added thereto, in March, it should be done 
in the first week of this month, as there directed. But if then at- 
tended to, there is no necessity for it now, as the pit will yet con- 
tinue to be in excellent order. 
Mmitting Air. 
Air should now be admitted in proportion to the increasing heat 
of the season; a great deal depends on this article; for without due 
attention to its utility and great influence on the plants, they may, 
if deprived of a sufficiency, be soon rendered of little value. 
Every warm, sunny day, when the wind is not cold, let some of 
the glasses or lights, be opened a little way, and more in propor- 
tion to the heat of the day; but this should not be done before nine 
or ten o'clock in the morning, and tliey ought not to be continued 
open longer, than while the air in the house keeps up to a proper 
degree of warmth. 
Towards the end of the month, you will find that a sufficiency of 
air cannot be admitted by the upright glasses; therefore, it will be 
very necessary, to have your roof lights constructed so as to slide 
up and down, by means of pullies. Seventy or seventy-two degrees 
of Fahrenheit, will be a good medium for sun-heat; but always 
when it rises above that, give abundance of air, and in the early 
part of the month, this is done with more safety, by sliding open a 
stifficient number of the roof-lights. 
Succession Pines. 
The succession pines, especially those intended for fruiting next 
season, should be shifted as early in this month as pessible, if not 
done in March. For the method of doing it, and the manner of 
treating them after, see page SIO. 
The crowns and suckers of last season, should now, also, be shift- 
ed into larger pots, and managed in like manner. 
Treatment of the other various Stove Plants. 
The general treatment directed for the pines, may be given in 
common, to most other stove plants. With respect to shifting, or 
adding fresh earth to the pots, that should now be done in the same 
manner as directed for the green-house plants; after which, if 
there be room in the bark-bed, let the pots I)e immediately plunged 
to their rims therein; and by the assistance of the kindly heat, the 
plants will root freely in the new earth, which will give them 
strength, promote their health, revive their colour, and prepare 
them the better, for a removal, into the open air, towards the end 
of next month. 
The woody kinds will now require frequent and gentle waterings; 
the herbaceous, occasionally; but the succulent sorts, should get 
