C. Primary and secondary syphilis, and obstinate eruptions, 1, 1087. Early syphilis; (H.G.P.). Syphilis, 208.

D. Chancres, 87, 69.

Chancroids (1x trit.), 204. Eczema of the scrotum, 209. Eczema, Piffard, 143, Oct. 26, '78.

Hahnemann hat sick den Dank alter practischen Aerzte durch die Bekanntmachung der Zubreilung dieses Mittels erworben, 54, 2: 87.

Remarks

This preparation was called by its discoverer, and is known to homoeopaths, as "Mercurius Solubilis," a name which is exceedingly inappropriate, as the preparation in question is insoluble in water, glycerine, alcohol, ether, chloroform, and oils. It is prepared, according to the U. S. Disp., by precipitating a dilute solution of nitrate of mercury with dilute aqua ammonia, and has, according to that authority, a composition expressed by the formula Nh3o, 3 Hg. O + No5, which would make it an ammoniated nitrate of protoxide of mercury. There is some doubt, however, as to this being its real composition, and the name I have given at the head of this article is the one usually adopted.

I have used this preparation for a number of years, and have elsewhere (87, 69) recommended it as a local application for chancres and syphilitic ulcerations. Latterly, I am using it internally with great satisfaction in early syphilis, giving it in the form of trituration in doses of from one-fifth to one-half a grain.