. Dreer's vegetables under glass : a little handbook telling how to till the soil during twelve months of the year. Vegetables; Cold-frames. 34 dreer's vegetables under glass. of economy of time, is explained in the chapters on lettuce and cucumbers. A great help in the matter of changing the soil of these great houses is the small door on the north side of the house, as herewith shown. A line of these doors extends from end to end of the forcing house, being cut through the double wall of boards on the cold side of the building. The doors are, of course, permanently closed during the
. Dreer's vegetables under glass : a little handbook telling how to till the soil during twelve months of the year. Vegetables; Cold-frames. 34 dreer's vegetables under glass. of economy of time, is explained in the chapters on lettuce and cucumbers. A great help in the matter of changing the soil of these great houses is the small door on the north side of the house, as herewith shown. A line of these doors extends from end to end of the forcing house, being cut through the double wall of boards on the cold side of the building. The doors are, of course, permanently closed during the ?3 .i^'h-\ Mr mm GLASS DOOES OE VENTILATOES, NEAE GEOIJND, ON WARM SIDE OF BOSTON FOECING HOUSE. On the southern side of the house, below the " square " or pitch of glass, a number of glass doors or ventilators are placed. These doors or gMss windows swing outward, being hinged on their upper edges, and are used during any time of the year, whenever required by the temperature of the house. These ventilators, in connection with others at the peak of the glass roof, aid in producing a perfect circulation of air above the plants growing in the beds. The ventilating. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Dreer, Henry A. Philadelphia : Henry A. Dreer, Incorporated
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectvegetab, bookyear1896
