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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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14*

Materia Medica.

Part II.

nia, but it is not so pure as the refined liquorice sold inthe shops, in small cylindrical pieces, not thicker than a goose-quill.

Neumann got from 480 parts of Spanish extract, 460 wa-tery extract, and the residuum was not affected by alcohol;and inversely, he got 280 alcoholic, and 180 watery extract.In this last case the alcoholic extract contained all the sweet-ness, the watery having scarcely any taste. From the simila-rity of their taste, and its not being crystallizable, Dr Thom-son has referred its saccharine matter to his new genussarco-coll.

The extract possesses the same properties with the root, andis used for the formation of several kinds of troches.

Gratiola officinalis. Ed. Dab.

Willd. g. 49, sp. 1. Dccandria Monogynia. —Nat. ord. Per-sonate.

Hedge-hyssop.

Off. The plant.

HERBA GRATIOLiE OFFICINALIS. Ed.

Hehba gkatioL/E. Dub.

Tins is a perennial plant, a native of marshy situations inthe south of Europe. It is gathered for use when in flower.It has no smell, but a very bitter, somewhat nauseous taste.It is a drastic purgative and emetic, and a very powerful an-thelmintic, but its use requires caution. In .substance it maybe given to the extent of half a drachm, and in infusion tothree drachms.

Vauquelin has analysed hedge-hyssop. Its expressed juicecontains, in a state of solution, 1. A brown gummy matter:2. A particular resinous matter extremely bitter; 3. A^smallquantity of animal matter; 4. Muriate of' soda, and perhapsmalate of potass. What remains after expression, containsmalate and phosphate of lime and iron, probably in the stateof phosphate. M. Vauquelin thinks, that the active and pur-gative ingredient is the substance soluble in alcohol, which hehas called a resinoid, as it is the only one possessing taste.Its solubility in water, which is increased by the gum andsalts, explains why the infusion, and still more the decoction,#re drastic purgatives.

GUAIACUM officinale. Ed. Lond. Dub.Willd. g. 819, sp. 9.. Decandria Monogynia. —Nat. ord,Gruinales.Guaiac.

 
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