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

  • Black, Joseph, 1728-1799.
Date:
1777
Catalogue details

Licence: Public Domain Mark

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

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    of a whitifh water in the receiver, which had a faint fmell of the fpirit of hartl- horn, gave a green colour to the juice of violets, and rendered the folutions of corrofive fublimate and of filver very ilightly turbid. But it did not fenfibfy effervelce with acids. TH E viagnefia, when taken out of the retort, weighed an ounce, three drains, and thirty grains, or had loft more than |the half of its weight. It ftill effervefced jpretty brifkly with acids, though not fo ftrongly as before this operation. The fire fhould have been raifed 'here to the degree requifite for the per- fed calcination of magnefia. But, even from this imperfect experiment, it is evident, that, of the volatile parts con-