I have just completed a greenhouse unlike anything I have ever seen and I submit a drawing of a cross-section. The side walls are built of brick, 4 feet high. The ends are solid brick clear to the roof. Upright frames (6) run through the center, 7 feet apart; girters or stringers (4, 2) are nailed to the framing and connect them from end to end of the house, one at the top of framing (6), the other 6 inches below, leaving an opening (3) for ventilation. The ventilator is opened and closed similar to a railroad couch ventilator. On the side walls is a wood plate 2 inches thick, to which the rafter is nailed. The rafter (5) reaches to the lowest stringer (4). The rafters are 12¼ inches apart at the bottom or foot of each rafter. A piece of sheet zinc as wide as the rafter is thick is tacked in the center and turned back to form a loop to hold the glass from slipping ; 10 x 12 double strength A glass is used. These are laid on top of the rafter after painting, leaving % inch between the glass. This space is filled with putty and an oval strip % inch thick is screwed down over the glass, the screws passing down through the putty into the rafter.

The panes are placed edge to edge and are not lapped. - W. H. Capell, Tennessee.