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 was a very noted lotion for venereal ulcers. It began from a formula by Jean Fernel, a Paris medical professor and Galenist (1497-1558), who dissolved 6 grains of sublimate in 3 oz. of plaintain water. This was known as the Eau Divine de Fernel. By the time when Moses Charas published his Pharmacopœia this lotion had acquired the name by which it was so long known, and was made from 1/2 oz. of sublimate in 3 lb. of lime water, and 1/2 lb. of spirit of wine. It yielded a precipitate which varied in colour from yellow to red.

A curious controversy prevailed for a long time among the chemical and medical authorities in France in regard to a popular proprietary remedy for syphilis known as Rob Boyveau-Laffecteur. It was sold as a non-mercurial compound. It was first prepared or advertised in 1780 by a war office official named Laffecteur, whose position enabled him to get it largely used in the army. Subsequently a Paris doctor named Boyveau bought a share in the business, but in time the partners separated, and both sold the Rob. Boyveau wrote a bulky volume on the treatment of syphilis, and in that he strongly praised the Rob. After the deaths of Laffecteur and Boyveau the business came into the hands of a Dr. Giraudeau, of St. Gervais. This was about the year 1829. In 1780 the Academie de Medicine had examined this preparation, and had apparently, though not formally, tolerated its sale. Their chemist, Bucquet, had been instructed specially to examine the syrup for sublimate. He reported that he could not find any, but he was by no means sure that there was none there, for he stated that he had himself added 2 grains to a bottle, and could not afterwards detect its presence. Between that time and 1829 several chemists studied the subject, and came to the