Gold. A metal found extensively in South America, California, and New Holland.

Med. Prop. and Action. Gold, in its natural state, is reported to be possessed of considerable alterative properties in Syphilis and Scrofula. The dose is stated to be gr. 1/4 - j. It may be given internally, or rubbed into the tongue and gurus, or in the form of ointment. It is also used for stopping teeth. The salts of this metal, which have been employed in medicine, are the Teroxide (AuO3) and Terchloride of Gold (AuCl3), and the double chlo-ride of Gold and Sodium (AuCl3,NaCl + 4 HO). They possess properties similar to those of the pure metal, but are much more powerful and energetic in their action. The lower animals have been killed by them when given in even moderate doses. The post-mortem appearances are those of poisoning by a corrosive substance.

Gaz. Med de Paris, 1849. Lancet, June 8, 1844, and Jan. 30, 1847. Comptes Rendus, Nov. 7, 1859.

§ Med. Times and Gaz., March 17, 1860. || Lancet, Dec. 12,1863.

The dose of the Teroxide is gr. 1/10, of the Terchloride and of the double Chloride of Gold and Sodium gr.1/20 upwards, either in the form of pill, or rubbed into the gums; having been previously mixed with some inert powder. They require to be given with great caution. Their great price will prevent them being generally employed.

510. Therapeutic Uses

In Scrofula, the value of the Salts of Gold has been strongly insisted upon by Chrestien, Lalonette, Duportal, and others; but they were fairly tried, and failed in the hands of Neil and Destouches. The subjoined formula is advised by Chrestien: -510 Therapeutic Uses 51 Ext. Bad. Daphne Mezer. 5iv., Auri Mur. (Terchlor.) gr. j., M. ft. pil. lx. Dose, 1 daily, to be gradually increased to 8. It appears to be greatly inferior in efficacy to Iodine and its compounds, and to Cod Liver Oil.

511. In Syphilis, the Salts of Gold were employed by Fallo-pius in the fifteenth century, Of late they have been advised by Chrestien, Legrand Gibert, and other French physicians. M. Cullerier employed them extensively, and in primary Syphilis he found them highly serviceable. In constitutional Syphilis they were of little, if any use. Dose, 1/29 of a grain, cautiously increased to |, to be joined with some mild powder, and rubbed into the gums. They are rarely employed.

512. In Acute and Chronic Rheumatism, the Terchloride has been extensively employed by Dr. Greiner, of Leipsic. He reports highly of its efficacy; but, as the formula which he generally used, and which he advises, contains a large portion of Aconite, it is difficult to determine how far, if at all, the Gold conduced to its efficacy.