greenhouses
greenhouses their construction and equipment
to my father in wiiose fllte heated shed roof propagating house i first learned to love the smell of the soil . . . v111 pkei7ace experiment stations and of the unitecl states department of agriculture . the book is offered wit11 a full conscious ness of its shortcomings but with the hope that it may be of sonie definite service and that it inay serve as a focusing point for criticisms and suggestions out of which nlay be born a fuller knowledge through the experience and observation of its readers . w. j. wright . new york state scllool of agriculture i 917 alfred new york . contents chapter i classes of sash beds classes of green houses evolution of the greenhouse . chapter i1 hotheds location of sash pit manure for coldframes cold or storage pits forcing boxes gable roof sash beds mqts and shutters care of sash bed materials . greekitouse proper general con siderations . . 35 49 location arrangement size of houses pitch of roof measuring the pitch length of rafters . chapter iv 1 ean to or shed roof houses even span or span roof houses uneven span houses ridge and furrow houses side hill houses curved roof houses curved eave houses circular houses . chapter v structural material . . 63 79 glazing sill eave plate gutter glazing bars side posts sash bars gable bars drip gutters purlins ridge kinds of wood used framing