Bockhart's Blood-serum Mercury

A mercurial used in the treatment of syphilis. It is prepared as follows from the blood of sheep, horses, or oxen: drams of blood-serum, sterilized after Koch's method, are placed in a graduated gla , and then mixed with a solution of 45 grains of bichlorid of mercury di olved in one ounce of boiling distilled water. The precipitate formed is redi olved by the addition of 105 grains of chlorid of sodium, di olved in five drams of distilled water. This compound is then a three per cent, solution of blood-serum mercury. By adding enough distilled water to make six ounces five drams, we have the solution generally used, containing one and one-half per cent of the mercurial salt. Injections of 15 minims (containing one-quarter grain of sublimate, combined with albumin) are made daily.