9 8

EXTRACTS AND ReSINS.

Boil the Senna in the diftilled water, adding,after its decoction, a little re£tified fpirit ofwine. Evaporate the ftrained liquor to a pro-per thicknefs.

R E M A R K.

Beaume fays the refinous parts of Senna are in fofmall a proportion to the gummy, that they are rea-dily boiled out together.— The fpirit may be addedwlien the decodtion is reduced to one half or tothree pints.

The Extradl is give- as a gentle purgative fromten grains to a fcruple j or, in lefs quantity, as anaffiftant to the milder laxatives.

OPIUM PURIFICATUM.

Pürified Opium.

Take of Opium, cut into fmall pieces> onepound.

Proof-Spirit of Wine twelve pints.

Digeft the Opium with a gentle heat, ftir-ring now and then tili it is difiblved, and

filter