Volume 1

A system of chemistry / by Thomas Thomson.

  • Thomas Thomson
Date:
1802
Catalogue details

Licence: Public Domain Mark

Credit: A system of chemistry / by Thomas Thomson. Source: Wellcome Collection.

Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.

    52/532 page 34
    Fixed alkalies. Iron, Copper, Tin, Lead, Silver, Bifmuth, Antimony, Mercury, Arfenic, Molybdenum. SECT. II. OF PHOSPHORUS. Method of Let a quantity of bones be burnt, or, as it is termed preparing [j^ chemistry, calcined, till they ceafe to smoke, or to phosphorus. . give out any odour,, and let them afterwards be redu- ced to a fine powder. Put this powder into a bason of porcelain or stoneware, dilute it with four times its weight of water, and then add gradually (stirring the mixture after every addition) two-fifths of the weight of the powder of sulphuric acid. The mixture becomes hot, and a vast number of air-bubbles are extricated *. Leave the mixture in this state for 24 hours ; taking care to stir it well every now and then with a glass ot porcelain rod to enable the acid to act upon the powder. Book L « . ' Affinities of sulphur. * The copious emission of air-bubbles is called in chemistry efferveicencc.
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