An account of the preparation and use of the phosphorated soda : being an abstract of a paper on that subject, inserted in the Journal de physique for August 1788 / by George Pearson ... with considerable additions, by the author.

  • Pearson, George, 1751-1828.
Date:
21 cm
Catalogue details

Licence: Public Domain Mark

Credit: An account of the preparation and use of the phosphorated soda : being an abstract of a paper on that subject, inserted in the Journal de physique for August 1788 / by George Pearson ... with considerable additions, by the author. Source: Wellcome Collection.

    14/14 (page 12)
    The demand for this new fait has occafioned feveral manufacturers, befides Mr. Willis, to prepare it. The fait I have feen prepared by him, in the fummer, was well cryftallized, very neat, and apparently free from any extraneous fubftance; but altho’ I have entire confidence in his fidelity, and the beft opinion of his ac¬ curacy, yet I cannot help expreffing a with that he would employ (if he does not do fo already) the foffil alkali, obtained by decompofing fea- falt or glauber fait, having, as already explain¬ ed, reafon to believe this article is liable to be contaminated by the mixture of the vegetable alkali always in the barilla. The compofition of this fait, however, with the alkali of glauber or fea-falt muft neceflarily render it more ex- penfive. THE END. *