Lemery says the bismuth of his time was a compound made in England from the gross and impure tin found in the English mines. “The workmen mix this tin with equal parts of tartar and saltpetre. This mixture they throw by degrees into crucibles made red hot in a large fire. When this is melted they pour it into greased iron mortars and let it cool. Afterwards they separate the regulus at the bottom from the scoriæ and wash it well. This is the tin-glass, which may be called the regulus of tin.” Pomet says much the same about the composition. He adds, “It is so true that tin-glass is artificial that I have made it myself, and am ready to show it to those who won’t believe me.”
Those writers belonged to the first quarter of the eighteenth century. A quarter of a century later Quincy is telling us that the metal called Bismuth “is composed of tin, tartar, and arsenic, made in the northern parts of Germany, and from thence brought to England.”
Meanwhile Stahl and Dufay had been studying bismuth and had established its character and elementary nature.
Liquor Bismuthi et Ammonii Citratis was introduced into the B.P. 1867, as an imitation of the proprietary Liquor Bismuthi, which Mr. G. F. Schacht, pharmaceutical chemist, of Clifton, had invented a few years previously. It was found that the official preparation differed from the proprietary one in taste and action principally because no attempt had been made to free it from the nitric acid used to dissolve the bismuth. This was corrected in 1885 by a liquor prepared from citrate of bismuth dissolved by solution of ammonia. This method has been further elaborated. Continental physicians have not favoured a solution of bismuth. They consider that the remedial value of bismuth depends on its insolubility; this view now obtains in England also.
Trochisci Bismuthi Compositi of the B.P. 1864, were believed to be intended to imitate the “Heartburn Tablets,” made by Dr. Burt, an eminent medical practitioner of Edinburgh in the early part of the nineteenth century, and sold for him at a guinea a pound. Notwithstanding the price, perhaps because of it, these tablets attained to considerable popularity. It was said that Dr. Burt and his apprentices made all he supplied in his kitchen. Some said that his tablets contained no bismuth, the antacid properties being due entirely to chalk. In 1867 rose-flavour was substituted for cinnamon in the official lozenges, and in 1898 the oxynitrate of bismuth gave place to oxycarbonate.
GOLD.
For gold in physick is a cordiall,
Therefore he loved gold in special.
Chaucer’s Doctour of Phisike.
The employment of gold as a remedy is but rarely mentioned in ancient medical literature. Gold leaf was probably used by the Egyptians to cover abrasions of the skin. Pieces of it have been found on mummies apparently so applied. Some of the Arab alchemists, Geber among them, are believed to have made some kind of elixir of life from gold, but their writings are too enigmatical to be trusted. Avicenna mentions gold among blood purifiers, and the gilding of pills originated with the Eastern pharmacists. Probably it was believed that the gold added to the efficacy of the pills. It was not, however, until the period of chemical medicine in Europe that gold attained its special fame.