This section is from the book "The London Dispensatory", by Anthony Todd Thomson. Also available from Amazon: PDR: Physicians Desk Reference.
Showing the Proportion in certain Preparations of Iron, Antimony, Arsenic, Iodine, and Mercury are contained in some compound Medicines.
Dub. Tincture of Acetate of Iron with Alcohol. Each fluid drachm contains about one grain of dry acetate of iron.
Lond. Solution of Tartarized Antimony contains in each fluid ounce two grains of potassio-tartrate of antimony.
Edin. Wine of Tartrate of Antimony contains in each ounce two grains of tartrate of antimony and potassa.
Dub. Solution of Tartar Emetic contains two grains of tartrate of antimony and potassa in each ounce.
Edin. Mercurial Plaster. Each drachm contains about sixteen grains of mercury (fifteen grains, Lond.).
Dub. Mercury with Magnesia. Five grains contain two of mercury.
Lond. Mercury with Chalk. Three grains contain one grain of mercury.
Lond. Solution of Bichloride of Mercury. Two fluid ounces contain half a grain of bichloride of mercury.
Lond. Mercurial Liniment. Six drachms contain one drachm of mercury.
Lond. Dub. Mercurial Pills. Three grains contain one grain of mercury.
Edin. Mercurial Pills. Each drachm contains fifteen grains of mercury. Each five-grain pill contains one and one fourth grain of mercury.
Lond. Edin. Pills of Chloride of Mercury. About four grains contain one grain of chloride of mercury.
Dub. Compound Calomel Pills contain one grain of mercury in five grains.
Lond. Dub. Stronger Mercurial Ointment. Two drachms contain one drachm of mercury.1
Lond. Weaker Mercurial Ointment. Six drachms contain one drachm of mercury.
Dub. Milder Mercurial Ointment contains half a drachm of mercury in two drachms of the ointment.
Edin. Mercurial Ointment. Each drachm contains twelve grains of mercury:
1 In the simple mercurial ointments, the mercury is probably in the state of an oxide; but in this table the quantity of the metal is given.
made with double the quantity of mercury, each drachm contains twenty grains.
Edin. Stronger Ointment of Nitrate of Mercury. Each drachm contains four grains of mercury.
Edin. Milder Ointment of Nitrate of Mercury. Each scruple contains half a grain of mercury.
Edin. Ointment of the Grey Oxide of Mercury. Each drachm contains fifteen grains of the oxide.
Edin. Ointment of Red Oxide of Mercury. Each drachm contains seven grains of the oxide.
Dub. Ointment of Nitric Oxide of Mercury contains in one drachm six grains and a half of the oxide.
Lond. Dub. Solutio Arsenicalis, Edin. Arsenical Solution. One fluid ounce contains four grains of arsenite of potassa.
Dub. Tincture of Iodine contains five grains of iodine in one fluid drachm.
 
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