supply it first have to heat a large body of air and material in the forcing-pit. The lean-to is never more than a decidedly cool greenhouse, but the Paxtonian may be heated to the pitch of a stove by simply driving the fire a little. The difference is due entirely to the fact, that from the boiler to the Paxtonian the pipes rise, whereas in the other house they are on a dead level throughout. This very fact proves that our difficulty in the first instance was not imaginary, and renders its solution the more satisfactory.
PAXTONIAN PLANT-HOUSE.
By this time some prudent reader will be asking if the question of “tenant right” in plant-houses is likely to engage our attention? Well, that is the very question we intend to illustrate in the next examples. The prudent reader need not, of course, be informed that, according to the law of the land, plant-houses, from the moment of their fixture in the soil, become the property of the freeholder. But it may be less generally known that the best house ever built is scarcely
