Direction of flues for hot houses

2114. The direction of flues, in general, is round the house, commencing always within a short distance of the parapet; and after making the course of three sides, that is, of the end at which the fire enters, of the front, and of the opposite end, it returns (in narrow houses) near to or in the back wall, or (in wide houses) up the middle, forming a path; and (in others) immediately over or along side of the first course. In all narrow houses this last is the best mode.