The dilute mineral acids, although a little altered, are not sufficiently so as materially to affect the doses.

Decoctum Scoparii is now simple, without Juniper and Taraxacum.

Extractum Colocynthidis Compositum restored as in Ph. Lond. 1836.

Pilula Colocynthidis Composita is the same as the Edinburgh preparation, containing powdered Colocynth pulp.

Extractum Jalapoe is made with cold water and spirit, in place of boiling water, and is about twice the strength of the Extractum Jalapte of 1851.

Extractum Colchici, and Extractum Colchici Aceticum, are stronger than the same preparations of 1851, from the subsidence of the starch being allowed to take place before the concentration of the juice.

Extraetum Stramonii is made with proof spirit in lieu of water, and is therefore a much stronger preparation, and less liable to mould, than the Extract of the London Pharmacopoeia.

Infusum Aurantii contains neither lemon-peel nor cloves.

Infusum Calumbae is made with cold water.

Infusum Gentianae Compositum contains spirit and coriander, but no lemon-peel.

Infusum Quassias is made with cold water.

Liquor Ammoniae Acetatis is five times stronger than that of 1851.

Liquor Potassae and Liquor Sodas, although a little altered in strength, are not sufficiently changed to affect the dose.

Liquor Morphias Hydrochloratis is half the strength of the London preparation.

The Spirits of the British Pharmacopoeia, made by dissolving the volatile oils in rectified spirit, are now of uniform strength, and contain one fluid part of oil to nine fluid parts of rectified spirit, and may be regarded as essences; they have no relation to the corresponding spirits of the London Pharmacopoeia, some being thirty-one times, and some as much as ninety-five times stronger.

Spiritus Chloroformi contains one part by measure of chloroform to nineteen of rectified spirit, and is a substitute for the preparation previously called Chloric Ether, which varied much in strength.

Syrupus Sennas is now much stronger, and is an efficient preparation.

Tinctura Aconiti is about one-third the strength of the London Tincture, 1851.

Tinctura Belladonnas is about half the strength of the London Tincture, 1851.

Tinctura Conii Fructus, about twice as strong as Tinctura Conii (Folia) Loud. 1851.

Tinctura Digitalis, about one-sixth stronger than the London Tincture.

Tinctura Opii, only diminished in strength in the ratio of 4375 to 4-80.

Tinctura Zingiberis, about twice as strong as the Tincture, 1851.

Vinum Ferri now contains one grain of tartarated iron in each fluid drachm of the preparation.

Vinum Opii is made with powdered opium in lieu of the extract, and contains no aromatic substances; it is of the same strength as the tincture of opium.