Greenhouse construction : a complete manual on the building, heating, ventilating and arrangement of greenhouses, and the construction of hotbeds, frames and plant pits . tical pile should preferably be made in a shed or manurecellar, but may be in the open air, or even in the frameitself. In three or four days it will be fermenting rap-idly, and should then be forked over, throwing the out- 1G4 GREENHOUSE COISSTRUCTIOX. side portion to tlie center; at the end of two or threedays the pile should be well warmed np, and the be made, or, if it has not warmed evenly, it shouldbe
Greenhouse construction : a complete manual on the building, heating, ventilating and arrangement of greenhouses, and the construction of hotbeds, frames and plant pits . tical pile should preferably be made in a shed or manurecellar, but may be in the open air, or even in the frameitself. In three or four days it will be fermenting rap-idly, and should then be forked over, throwing the out- 1G4 GREENHOUSE COISSTRUCTIOX. side portion to tlie center; at the end of two or threedays the pile should be well warmed np, and the be made, or, if it has not warmed evenly, it shouldbe again turned over, before being placed in the working over the pile, all coarse lumps should bebroken up, and the heap should be left as light as j^ossi-ble, to encourage fermentation. If, when the materialis placed in the frame, it is quite warm, it may be lev-eled off and firmly tramped down, filling it up to withinsix or eight inches of the glass. Should it not be aswarm as is desirable, it may be best to delay the finaltramping for a couple of days. The bed is now ready for tlie soil, which should bea ricli com^iost. For many crops the soil and manure. FIG. 88. COLD PIT. from an old l)ed will answer. The best materials wouldbe equal parts of pasture sods, decomposed manure, gar-den soil, and sand enough to make a light mass and pre-vent baking, spread over the manure to the depth of sixinches. For two or throe days there will be a violentheat in the bed, but this will soon go down and the bedwill be ready for seeds or ])lants. If, while preparing r)ETACHED COLD FRAMES AND PITS. 165 the manure for the bed, it is found to be dry, it shouldbe moistened with tepid water from a watering can. In caring for hotbeds, the mats and shutters shouldbe taken ofp on pleasant days, as soon as che sun is wellup, and on bright days the beds should be given airabout the same as in a forcing house. The beds shouldbe closed, at least, two hours before sunset, and the cov-ers should be
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