The gardener's magazine and register of rural & domestic improvement (1826)
Loudon, J. C. (John Claudius), 1783-1843, A. & R. Spottiswoode, printer, United States. Patent Office. Scientific Library, former owner DSI · London : Longman, Rees, Orme, Brown and Green · leaf 317
edge,6 or 7 ft. in height; so that their tops may be beyond the reachof cattle. 8. Account of an improved mode of ventilating Hot-houses. ByMr. John Tweedie, Gardener at Eglinton Castle. Instead of giving air at the top of the roof by letting downsliding sashes, Mr. Tweedie raises up by a… … and the cord, rod, or jack line (e), to which the lever (h) isattached, is shown balanced at one end by a weight (g), andfastened at the other by a movable hand-pin (b). In one ofthe upright styles or door-posts (a), in the end of the house,are pierced several sockets .at 6 in. distance. Into…
