Aromatic Powder of Chalk and Opium.—Opium 2·5 per cent., the rest of the constituents being cinnamon, nutmeg, saffron, cloves, cardamoms, and sugar.
Compound Powder of Ipecacuanha (Dover’s Powder).
| Opium, | 10 | per cent. |
| Ipecacuanha, | 10 | „ |
| Sulphate of Potash, | 80 | „ |
Confection of Opium (Confectio opii) is composed of syrup and compound powder of opium; according to its formula, it contains 2·4 per cent. of opium by weight.
Extract of Opium contains the solid constituents capable of extraction by water; it should contain 20 per cent. of morphine, and is therefore about double the strength of dry powdered opium.
Liquid Extract of Opium has been also examined by Mr. Woodland:[373] ten samples yielded as a mean 3·95 per cent. of dry extract, the highest number being 4·92 per cent., the lowest 3·02. The mean percentage of morphine was ·28 per cent., the highest amount being ·37, and the lowest ·19 per cent.
[373] Op. cit.