‘This is a sethi-metst watoraly cbtéined i ina a state of combination 
with different minerals, in England, Hu : 
obe ; itis of a whitish color, nearly ¢mbli 
it does not so speedily tarnish. Beets 
From zinc several preparations are made ; under which the me- 
dicinal virtues of this article are described. 
__ Sulphate of Zinc.—White vitriol.—This substance is produced by 
oxy of zinc with sulphuric acid. 
Sulphate of zinc, in doses of from ten grains to half a drachm, 
operates almost instantly as an emetic, and is at the same time per- 
_ fectly safe. It is therefore given when immediate vomiting is re- 
lired, as in cases where poison has been swallowed. It has been 
«given in ll doses as a tonic, but I should not advise it. Exter- 
nally this medicine is used as a styptic application to stop hemorrha- 
_ es, diminish increased discharges, as gonorrhea ; and to cure the 
CasTILE or Spanisn Soar. 
- Soap is a composition of fixed alkaline salt, in a state of comical 
_ tion with animal or vegetable oil ; it is sometimes dry and hard ; at 
others, soft and liquid ; being manufactured various ways, with and 
without heat. 
_. The only difference in the various kinds of manufactured soap, is, 
°% ja thet alls aeuplaged de-the tonipshition, Thus the common hard 
ae ‘soap is prepared from caustic ley, with the addition of tallow. The 
_ Venice, + Castile or Spanish soap, with olive oil. The perfumed com- 
soaps are prepared i ina similar manner: “the oils of such vegetable 
_ Substances being employed instead of those of the usual kind. 
The only species which is in common medicinal use, is that com- 
posed of olive oil and soda. It is only prepared in the countries which 
produse the oil. For medicinal purposes, the Castile, or Spanish i ig 
; The detergent properties of soap, or the power it possesses of ren- 
aoe dering oily or resinous substances capable of being mingled: with 
Water, has given rise to very erroneous notions of its medicinal vir- 
tues. It was supposed to render such substances more readily solu- 
: ble in the juices of the stomach, and in the fluids of the body, and to 
__ be well fitted for dissolving such oily and unctuous matters as it may 
“meet with in the body, - 
over the urinary calculus; and iuhalion: of soap in lime-water, has 
been considered as one of the strongest dissolvents that can be taken 
__with safety into the stomach ; for the virtue of this composition has 
_ been thought considerably greater than the aggregate of the dissolvs. 
ing ee of the soap and lime water, when unmixed. 
