MISCELLANY. 
Cyanide of Gold. — Mr. Defposses recommends to those who, in the 
the preparation of this substance by means of cyanide of mercury and 
a solution of chloride of gold, fear that some traces of the mercury 
might be retained with the gold, a resort to another method which suc- 
ceeds equally well. It consists in submitting the hydrated oxide of 
gold, precipitated by magnesia according to Pelletier's method, to the 
contact of recently prepared and diluted hydrocyanic acid. In the first 
moment of the mixture the oxide of gold becomes blackish green, (con- 
stituting, perhaps, the cyanide of the oxide not yet obtained,) but in 
carrying the liquor to ebullition it soon takes a fine yellow tinge : al! 
that is required then is to evaporate to dryness, by a very moderate heat, 
to obtain a very handsome and pure product, which needs no washing. 
For a cyanide of gold destined for medical use, this mode of preparation 
is to be preferred. — Jour, de Pharm. 
Moxorts Magnesian Aperient* 
R Magnes. Sulph. 
Sodse Carbon, aa lbj ; 
Acid. Tart. Ibss. M. 
The ingredients to be separately and well driecL 
PovjelPs Pectoral Balsam, 
B Rad. Ipecac. Contusae, ^iss. 
Flor. Benzoin. 
01. Anisi, giij. 
Spirit. Vin. Rectif, Olj. 
Aquae. Distill. Oj. 
