This is prepared by macerating iron wire in sherry for a month. Some of it is converted into tartrate and dissolved by the bitartrate of potassium in the wine.

Dose. - 1 to 2 fl. dr. or more. Use. - It is useful in anaemia both in children and adults, and may be given with cod-liver oil.

B.P. Mistura Ferri Aromatica. - This is a curious preparation containing tannate of iron in very small quantities. It is sometimes called Heberden's ink. It is usually said that iron and tannin are incompatible, and so they are in so far that they produce ink, but this preparation is said to be a very useful one.

Iron cannot be taken up in very large quantities, and its absorption is often prevented by the condition of the patient's stomach. This preparation has been put together evidently with the view of combining all the drugs which were likely to do good by themselves, and in total disregard of the chemical action which would take place among themselves.

Preparation. - By macerating pale cinchona bark (1 oz.), calumba root (1-oz.), cloves (1/4-oz.), and fine iron wire (1/2-oz.), in peppermint water (12 oz.) for three days, agitating occasionally; then filtering and adding as much peppermint water to the filtrate as will make the product measure 12 1/2 fl. oz.; to this add compound tincture of cardamoms (3 fl. oz.) and tincture of orange peel (1/2 fl. oz.), and preserve the mixture in a well-stopped bottle. The pale cinchona bark contains tannin, which combines with the iron. Both it and calumba are gastric tonics, and the carminatives relieve flatulence.

Dose. - 1 to 2 fl. oz.