Observations on the ventilation of rooms; on the construction of chimneys; and on garden stoves / Principally collected [by R. Willan] from papers left by the late John Whitehurst.

  • John Whitehurst
Date:
1794
Catalogue details

Licence: Public Domain Mark

Credit: Observations on the ventilation of rooms; on the construction of chimneys; and on garden stoves / Principally collected [by R. Willan] from papers left by the late John Whitehurst. Source: Wellcome Collection.

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    [ 5' ] ru fifing into the ilove ; and the valves will readily yielcf to the prcfiure of the expanded air within, which enters by the alfigned.direction. 4. Befide iupplying the plants with a proportion of frefh water adequate to the quantity of rain obferved in their natural fituation (fee table,• p. 39.) Mr. White- hurfl had an idea of imitating, in his artificial climate, the fall of dews, which is fo confiderable in all tropi- cal countries. This could only be done by a cautious adnfiflion of pure watery vapour, which might afterward con* denfe upon the plants and on the foil. A refervoir of water might be placed with this view, either within the Hove, or adjoining to it. An iron or copper vefiel fhould be fixed in contact with the flue near the fire, and have a communication with the refervoir, fo as to fupply itfelf without much trouble. The top of the vefiels fhould open by a pipe into the flove. In order to render this plan fafe, the fleam muff he admitted very gradually ; the water fhould he kept at a heat confiderably below the boiling point, and fhould be thoroughly reduced to vapour, on its trail f- miffion into the flove. The vapour fhould be directed by means of the pipe upward to the roof, fo that it may condenfe before its defcent upon the plants.