I have no doubt but that many who desire to have greenhouses, but are ignorant of their construction and cost, will bestow due thanks on C. D. Warde for the able assistance he offers them.

While agreeing with him on the whole, I cannot concur with him as to his representation being the best and most economical greenhouse to meet the wants of amateurs. Neither do I consider a plant house complete, nor economically built, unless it be provided with a supply of water, and that in such form that it can be warmed to the same temperature as the house before it is given to the plants.

For those wishing to grow plants on a small scale I would recommend a greenhouse of the following description: It should be span-roofed, say 15 by 25, with a centre-table 4 feet wide; side tables, 3 feet 10 inches; walk all round, 2 feet 8 inches. The centre-table should be built of brick, 2 feet 6 inches high, cemented inside to a depth of 1 foot 6 inches. This would form a tank for the surface water of the roof. A small pump at one end of the tank will com plete the arrangement for a constant supply of water, which is a great consideration in the culture of plants.

A house of this description would cost a trifle more to erect, but the great advantage it contains for plant growing over the one figured by your correspondent would amply repay the extra outlay.

If C. D. W. has reference to an ordinary greenhouse, he is rather superfluous in names. Hot-house, conservatory and greenhouse, is somewhat confusing when applied to the same house.