ERECTION AND MANAGEMENT OF GREENHOUSES. 
19 
I have also a little cucumber pit lately built, into which I have 
taken a branch steam pipe. It is on Me. Phail’s plan with a hole in 
the pipe to let out steam into each flue; also holes under the hills 
which are put upon rubble, and by turning on the steamer every two 
or three days, it causes a very nice heat. I have a trellis to train mv 
plants upon, or rather to spread them upon, about twelve inches from 
the glass, they look very healthy, and likely to do well through the 
winter. 
Oct. 23rd, 1834. 
FLORICULTURE. 
ARTICLE VII.—REMARKS ON THE ERECTION AND GENERAL 
MANAGEMENT OF GREENHOUSES, 
WITH THE PLAN AND DESCRIPTION OF A NEW ONE BUILT AT CHATSWORTH. 
BY JOSEPH PAXTON, F. L. S. H. S. 
All greenhouse plants being natives of temperate climates, as the 
Cape of Good Hope, New Holland, &c. require very little artificial 
heat, and that only under certain circumstances. 
In building a greenhouse, always place it so as to receive the full 
benefit of the morning and mid-day sun. This is particularly 
necessary for the welfare of the plants during winter, and early in 
the spring. 
Light is indispensable, therefore, so construct the building, that as 
little light is obstructed as possible. Also the back and front sashes, 
or ventilators, should be fixed to open with ease, for the admission 
of as large a quantity of air, as will be required at different times in 
the year. 
With regard to the materials of which the roof ought to be con¬ 
structed, we would always give preference to wood, except in certain 
forms of structure, when metal may be used with advantage. 
The mode of glazing may depend in some measure on the taste of 
the proprietor, or those into whose hands he commits the care of the 
building. In no case, however, should the laps of the glass be put¬ 
tied, because the circulation of the air, is thereby greatly impeded. 
If beauty is an object, the glass on the roof should be cut in squares 
of about six inches by seven inches, but for cheapness and strength 
six by three inches is preferable: and if the laps be small, and the 
workmanship be done judiciously, the glazing will look very well. 
