262 
Miscellany. 
Sub-deuto nitrate of mercury, ^i. 
This ointment is used for indolent schirrous tumours of a dark red cha- 
racter. When cancerous and inflamed tubercles exist on the skin, the au- 
thor destroys them by applications of a solution of cyanide of potassium 
made with ten or twelve grains of the salt to two ounces of distilled wa- 
ter. Journ. de Pharm. 
Colour of eschars produced by various chemical agents. — 
Nitric rcid causes^a yellow eschar, not very firm. 
Nitrate of silver, a brown eschar on the skin, and a thin white one on 
wounds. 
Caustic potash, a black semi-coriaceous, somewhat thick one. 
Acid nitrate of mercury, a blood red one on the skin, a pale gray semi- 
coriaceous, somewhat thick one on the flesh. 
Sulphuric acid, a semi coriaceous iron grey one. 
Muriatic acid, a white, hard, somewhat thick one. 
Nitro-muriatic acid, a yellowish, semi coriaceous, somewhat thick 
one. 
Chloride of zinc, a white, very hard, thick one. 
Arsenious acid, a livid, hard thick one. 
Sulphate of copper, a brown, very hard, thick one. 
Chloride of antimony, a white, soft, thick one. 
Ibid. 
Remedy against cancer. — The Hippomanes mancinella or manchineel has 
long been known as a most virulent poison ; the Indians employ its 
juice to envenom their arrows, and it is also extensively used by the tribes 
inhabiting the banks of the Orinoco as an anticarcinomatous remedy. Nu- 
merous experiments have proved that arsenic is neutralized by the secre- 
tion of a cancerous ulcer, while it preserves its poisonous properties when 
placed in contact with any other sore. The same phenomenon is observed 
with respect to the manchineel, its poisonous effects being in like man- 
ner neutralised by the secretion of cancerous ulcers. The Indians when 
employing it, surround the cancerous sore with a pasty border, and apply 
to the centre of it a few drops of the juice of the manchineel, an eschar 
soon forms, which comes away in about 48 hours, leaving a clean wound. 
Journ. de Con. Med. and N. A. Arch. 
Plaster in whooping cough. — M. Corsin says that he has recently ob- 
tained very prompt and happy effects in several cases of whooping cough, 
by the application of the following plaster between the shoulders: 
R. Emplast. cicuta, ^i. 
" Pic. Burgund. 
" Diachylon. ^ ?ss. 
