ACI—ACI . * 
No. 2.—Potio Acidi Hydrocyanici. Potio: tion of Hydro 
cyanic Acid—Magendie’s Pectoral Potion. 
: 4 = Infusion of ground ivy, (Glechoma hederacea,) 2 02. 
: Medicinal Prussic Acid, 15 drops 
Syrup of Marsh Mallows, 1 oz. 
Mixed and shaken, before use. 
Dose, a desert-spoonful every nine hours. 
No. 3.—Syrupus Acidi Hydrocyanici——Hydrocyanic. 
Syrup. 
Clarified syrup, ibl é 
Medicinal Prussic Acid, gr. 59.07 troy 
To be added to common pectoral syrups, and used 
_asthey are. : cee ae 
No. 4.—Lotio Acidi Hydrocyanici—Hydrocyanic lotion. 
Hydrocyanic acid, f Ziv } a 
Rectified spirit of wine, f£3j 
Used by Mr. A. T. Thompson, as a wash for im- - 
petiginous affections. 
x 
No. 16.—Acipum Benzoicum. L.E. D. & Phar. 4 
U.S. Benzoic Acid. Flowers of Benzoin. — 
Cabinet specimen, Jeff. Coll. No. 17. 
A preparation of gum Benzoin, which is the produce of 
Styrax Benzoin, or Benjamin trée of Sumatra, 
Quvatities. Inodorous, when entirely pure; very agree- 
ably fragrant and aromatic, as it is found in the shops, - 
u the name of flowers of Benzoin ; in this state, — 
it contains some oil, on which its odour depends—by — 
dissolving it in alcohol, and precipitating it by water, 
this is got rid of. It is, pea in its Tey ti state 
altogether, that it is. em ‘ medical purposes. — 
Taste pungent, pet acrid, and acidulous. It is- 
jn minute acicular crystals and flakes, soft to the 
touch, of a beautiful white hue and saline lustre, and 
“not pulverulent. Specific gravity, 0.657. Ina strong - 
heat, it burns with a white flame—in a lower heat, it 
melts, and emits an acrid suffocating vapour. Soluble 
in twenty-four times its weight of boiling water; but 
is nearly all deposited on cooling, say nineteen twen- 
- tieths. With alkalies, earths, and metallic oxides, 1 
forms, salts, eS benzoates of each, which have — 
never been applied to medical purposes. _ co 
