and many others. In 1720 Louis XIV bought the formula for its preparation for a considerable sum from La Ligerie. It has been agreed by chemists, Berzelius and others, who have studied Kermes Mineral, that it is a mixture of about 40 per cent. or less of oxide of antimony with a hydrated sulphide of the metal, and a small proportion of sulphide of sodium or potassium (according to the method of preparation). It is still official in the Pharmacopœias of the United States and of many Continental countries.
From the solution from which the Kermes had been deposited a further precipitate was obtained by the addition of hydrochloric acid. This, too, was a mixture, consisting of protosulphide and persulphide of antimony with some sulphur. It was the golden sulphuret which in association with calomel became so noted in the form of Plummer's powder and Plummer's pills. The powder was at first known as Plummer's Æthiops Medicinalis.
It would be tedious to go through the multitude of antimonial compounds which have become official, and it would be impossible in any reasonable space even to enumerate the quack medicines with an antimonial base which were so recklessly sold in this and other countries, especially in the earlier half of the seventeenth century. The most important of all the antimonial compounds, or, at least, the one which has maintained the favour of the medical profession in all countries, is, of course, the tartrate of antimony and potassium, emetic tartar.
Emetic Tartar.
Adrian Mynsicht, physician to the Duke of Mecklenburg in the early part of the seventeenth century, is generally credited with the invention of emetic tartar.
