Goulard made his extract of Saturn by boiling together golden litharge and strong French wine vinegar at a moderate heat for about an hour, stirring all the while, and after cooling drawing off for use the clear supernatant liquor. Diluting this extract by adding 100 drops to a quart of river water with four teaspoonfuls of brandy, made what he called his Vegeto-Mineral Water, which he used for lotions. His cerate of Saturn was made by melting 4 oz. of wax in 11 oz. of olive oil, and incorporating with this 6 lbs. of vegeto-mineral water (containing 4 oz. of extract of Saturn). A cataplasm was made by gently boiling the vegeto-mineral water with crumb of bread. A pomatum was prepared by combining 4 oz. of the extract with a cerate composed of 8 oz. of wax in 18 oz. of rose ointment. This was made stronger or milder as the case might need. There was another pomatum made with the extract of Saturn, sulphur, and alum, for the treatment of itch; and several plasters for rheumatic complaints. Goulard gave full details of the various uses of these applications in inflammations, bruises, wounds, abscesses, erysipelas, ophthalmia, ulcers, cancers, whitlows, tetters, piles, itch, and other complaints. His own experience was supported by that of other practitioners. In giving the results of his experience thus freely and completely, Goulard was aware of the sacrifice he was making. “I flatter myself,” he says, “that the world is in some measure indebted to me for publishing this medicine, which, if concealed in my own breast, might have turned out much more to my private emolument”; at the same time he did not object to reap some profit from his investigations, if this could be done. At the end of the English translation of his book, a copy of a document is printed addressed to his fellow student of fifty years before, Mr. G. Arnaud, practising as a surgeon in London, engaging to supply to him, and to him only, a sufficient quantity of extract of Saturn made by himself, to be distributed by the said Mr. Arnaud, or by those commissioned by him, over all the dominions of his British Majesty. SCHEELE.