. Dreer's Vegetables under glass . GLASS DOOKS OR VENTILATORS, NEAR GROUND, ON WARM SIDE OF BOSTON FORCING 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 glass 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

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectvegetab, bookyear1896