Experiments upon magnesia alba, quick-lime and other alcaline substances / ... To which is annexed an essay on the cold produced by evaporating fluids and of some other means of producing cold by William Cullen.

  • Black, Joseph, 1728-1799
Date:
1782
Catalogue details

Licence: Public Domain Mark

Credit: Experiments upon magnesia alba, quick-lime and other alcaline substances / ... To which is annexed an essay on the cold produced by evaporating fluids and of some other means of producing cold by William Cullen. Source: Wellcome Collection.

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    breao ng cured, I afterwards made ufe of a falt called Ep/om /falt,. which is feparated from the bittern by cryftallization, and is evidently compofed of magnefia and the vitriolic acid. THERE is likewife a fpurious kind of Glauber falt, which yields plenty of magnefia, and feems to be no other than Epfom falt, of fea-water reduced to cryltals of a larger fize. And com- mon falt alfo affords a fmall quantity of this powder ; becaufe, being fepa- rated from the bittern by one hafty cryftallization only, it neceflarily con- tains a portion of that liquor. THosE who would prepare a magne- jia from Epfom falt, may ufe the fol- lowing procefs : DIssoLvE