Page:The Amateur's Greenhouse and Conservatory.djvu/56

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50
AMATEUR’S GREENHOUSE

by four inches, and the gutter must be lined with zinc or thin lead, to prevent the water injuring the wood. A small lead pipe will convey the water down the inside angle of the building into a drain or tank; the rafters are five inches by three and a half inches, and have a beading braded on to their under side, and a capping on the top, for the double purpose of keeping the roof lights in their place and the water from getting into the house; but in addition to the capping, the lights

must have screws (Fig. 9b), commonly known as bed-screws,