FER—FER a 
This is the formula of the late Dr. Rush, for mak- 
ing what were called in his time, Rush’s tonic 
powders. He prescribed them almost daily, to the 
patients of the Pennsylvania Hospital, when I was 
i resident physician, there; and they were daily 
Se made up in his shop, (for there were no doctors’ 
ori offices then, ) by his pupils, for private patients, 
“No. 261.—Ferri suLpHAS.L.& U.S. Sulphas Ferri. 
: E.D. (Ferrum Vitriolatum. P.L.1787. Sal 
_ Martis. P. . 1745. Sal seu Vitriolatum 
Martis. P. L. 1720.) Sulphate of iron, (for- 
merly Green Vitriol.) 
Cabinet specimen, Jeff. Coll. No. 294. 
Quatitiss. Beautiful apple-green, rhomboidal prisms, efflo- 
rescing, on exposure to air, and becoming covered with 
a yellow powder, owing to their attraction of oxygen ; 
heating them, produces watery fusion—if by exalted 
oe temperature, the acid is driven off, and a peroxide of 
= iron remains, which is known in commerce, by the name 
_~ of Coleothar. (Cabinet specimen, Jeff. Coll. No. 295,) 
According to Dr. Thompson, the sulphate of iron consists 
of 27.7 parts sulp. acid, 28.3 protoxide of iron, 45 water— 
8 parts of which exist in combination with the oxide of 
iron. Soluble in 2 parts of water, at 60° F. and three- 
fourths at 212°—the solution reddens vegetable blues— 
insoluble in alcohol, until the iron be farther oxidized. © 
‘Mepicat Prorertizs anp Users. Tonic, astringent—said to 
be emmenagogue and anthelmintic—if so, it is by its tonic 
power. Gripes, in large doses. Dose, gr. i-to grs. v 
combined with rhubarb, or some bitter extract. The aro- 
Matic lozenges of steel, consist of this salt, with a small 
proportion of tinct. of cantharides. 
Orric. Prev. Mistura ferri comp. L. Pil. ferri comp. L. 
Sulphas ferri exsiccatus. BE. L. D. 
Formule— z 
No. 1.  Magnesiz sulphatis, et 
Sodz sulphatis, aa 3 ss 
Ferri sulphatis, gTs. v 
Misture Camphora, f3 viiss 
Make a mixture—of which 2 table-spoonfuls are 
to be taken twice a day. Cathartic for debi- 
litated persons, or for worms. 
No.2. R Sodz Carbonatis, Bij 
ns . Ferri sulphatis, gts. lij 
Magnesiz sub-carb, 3] 
. _ Aque pure, a One 
