“The furnaces may either be placed in front, or at the back, according to conveniency; but the strength of the heat should be first exhausted in front, and should return in the back-flues. The fruiting-pit would require two small furnaces, in order to diffuse the heat regularly, and keep up a proper temperature in winter; one to be placed at each end; and either to play, first in front, and return in the back; but the flues to be above, and not alongside of one another; as in that latter way they would take up too much room. The under one to be considered merely as an auxiliary flue, as it would only be wanted occasionally. “None of these flues need be more than five or six inches wide, and nine or ten deep. Nor need the furnaces be so large by a third, or a fourth part, as those for large forcing-houses; because there should be proper oil-cloth covers for the whole, as guards against severe weather, which would be a great saving of fuel. “The depth of the pits should be regulated so as that the average depth of the bark-beds may be a yard below the level of the front flues; as to that level the bark will generally settle, although made as high as their surfaces, when new stirred up. If leaves, or a mixture of leaves with dung, are to be used instead of bark, the pits will require to be a foot, or half a yard deeper. “It may be thought too much to insinuate, that those who have large Pineries should turn them to other purposes, and erect such as are described above. There cannot be a doubt, however, respecting the satisfaction that would follow, if to have good fruit at an easy rate were the object. I have given designs for no other kinds of new Pineries these six years past, but such as these; with some variations respecting extent, however, in order to suit different purses.”