LETTER VIII.

Use of Plant-Houses.--Nature of Climates.--Different Kinds of Hothouses.--The Dry Stove, the Bark Stove, and the Orchideous House.--Culture of Plants in the Bark Stove.--Aquarium and Water Plants.--Red Spider.--Culture of Succulent Stove Plants.--Culture of Orchideous Plants.--The Greenhouse.--The Australian House, and Culture of its Plants.--The common Greenhouse, the Heath House, the Conservatory, the Orangery, and the Camellia House.--The Culture of Plants in the common Greenhouse.--Potting Plants.--Heaths.--Culture of Plants in the Conservatory.--Culture of Orange Trees.--Aphides.