Description of Ventilators:

Whereby Great Quantities of Fresh Air May with Ease be Conveyed into Mines, Goals, Hospitals, Work-Houses and Ships, in Exchange for their Noxious Air. An Account also of their Great Usefulness in Many Other Respects: As in Preserving All Sorts of Grain Dry, Sweet, and Free from Being Destroyed by Weevels, both in Grainaries and Ships: And in Preserving Many Other Sorts of Goods. Also in Drying Corn, Malt, Hops, Gun-Powder, &c. and for Many Other Useful Purposes

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1743

English

England

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London

600 Technology (Applied sciences)

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GÜB-FR

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