Copy 1

The modern practice of the London hospitals. Viz. St. Bartholomew's, St. Thomas's, Guy's, St. George's, the Portuguese, and the Lock, at Hyde-Park-Corner.

Date:
MDCCLXX. [1770]
Catalogue details

Licence: Public Domain Mark

Credit: The modern practice of the London hospitals. Viz. St. Bartholomew's, St. Thomas's, Guy's, St. George's, the Portuguese, and the Lock, at Hyde-Park-Corner. Source: Wellcome Collection.

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    Salt of wormwood. Let the afhes of wormwood be put into an iron pot, and kept red-hot by a ftrong fire for fome hours, often ftirring them, that all remains of oil may be burnt out; then boil them in water; ftrain the water, which will be impregnated with the falt, through paper, and evaporate it to drynefs. In this manner is to be prepared the fixt alka- line falt of any plant, whofe afhes will yield thae kind of falt. Salt of tartar. Wrap up any fpecies of tartar in ftrong brown paper, firft made wet, or inclofe it in a proper vefie)], and expofe it to the fire, that its oil may be burnt out; then boil it in water, and collect its falt, as before. Ley of tartar. - When the tartar is calcined white, let it be put ina damp place, that it may liquify by the moifture of the air. Soluble tartar. Take of any alkaline fixt falt, a pound ; of water, a gallon. ‘The falt being diflolved in the water boiling, throw in chryfta's of tartar in powder, as long as any fermentation is raifed, which ufually ceafes before ,thrice the weight of the alkali is thrown in. Then ftrain the liquor through paper 5 and after due evaporation fet it by, for the fale to chryftallize, or elfe evaporate the liquor wholly away, that the falt may be left dry. Soap leys. ‘Take equal weights of Ruffia pot-afh, and quick- lime, and throw water upon them by degrees, till the lime is flaked ; then throw on more water, and } Stir