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The Edinburgh new Dispensatory : containing 1. The Elements of pharmaceutical Chemistry ; 2. The Materia Medica; or the natural, pharmaceutical and medical History, or the Substances employed in Medicine ; 3. The pharmaceutical Preparations and Compositions ; including Translations of the Edinburgh Pharmacopoeia published in 1805, of the Dublin Pharmacopoeia in 1807, and of the London Pharmacopoeia in 1815
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Chap. III. Alkalies and Alkaline Salts.

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must contain a proportion of water capable of dissolving somecarbonate of ammonia.

But, to prove the want of chemical knowledge in the con-trivers of this process, it is only necessary to mention, thatthe product is unfit for the preparation of the aromatic am-moniated alcohol, as it will not dissolve the volatile oils.

The process now, for the first time, directed by the Edin-burgh college, is therefore infinitely preferable, as it is notonly more elegant, but more economical, and dissolves thevolatile oils perfectly.

The Berlin college direct this preparation to be made bysimply mixing two parts of alcohol with one of water of am-monia ; and the London college have substituted this processfor the unchemical one in their former edition. Mr Phillipsobjects to the new process, when made with the liquor am-monite so strong as it was in the Pharmacopoeia 1809, itsgreat difference in strength from that of the former Phar-macopoeia, while its doses are still stated to be the same. Forthis error, not the college, but the commentators on its code,have to answer, and if we know the proportionate strength itmay be rectified. In the editio altera IS 1.3, the strengthis reduced more than one half. Mr Phillips found, thatwhen the spirit of ammonia, as prepared by the process1809, had a sp. gr. of 0.914, the saturating power of afluidounce as an alkali was equal to 95 grains of marble,whereas, by the former process, its sp. gr. was 0.845, and itssaturating power 32 grains of marble; the former beingthree times, as great as the latter, besides being caustic in-stead of subcarbonated. He has proposed to substitute anotherprocess, which shall be noticed in the remarks upon the Spt.Ammonia? aromaticus.

Carbonas ammonite, olim Ammonia prjeparata. Ed.Carbonate of Ammonia, formerly Prepared Ammonia.Take of

Muriate of ammonia, one pound ;

Soft carbonate of lime (commonly called chalk), dried,two pounds.Having triturated them separately, mix them thoroughlv,and sublime from a retort into a refrigerated receiver.

Bub.Take of

Muriate of ammonia, in powder, and well dried,Dried carbonate of soda, of each half a pound.

 
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