16 
REVIEW OF THE DUBLIN PHARMACOPOEIA. 
Syrupus Morphia Acetatis, and Syrupus Morphia Muriatis are 
solutions of the respective salts in simple syrup, J of a grain per fluid 
ounce. 
Tinctura Cannabis Indicce, is made by dissolving half an ounc 
of purified extract of Indian hemp, in half a pint of alcohol. 
Tinctura Cinchona. — All of the pharmaceutical preparations of 
cinchona, except quinia and its salts, are prepared with crown or 
pale bark. We are accustomed to view this species as so inferior 
in medicinal power, that it is a matter of surprise that it should 
be the only one employed in the galenical preparations of bark. 
There is no extract of bark officinal. 
Tinctura Matico, made with 8 ounces to 2 pints is officinal. 
Valerianates. — Under this head the valerianates of iron, quinia, 
soda and zinc are introduced. As the others are all made from the 
soda salt, by double decomposition with salts of the respective bases, 
we will give the formula for the latter in full, as it is unique. 
Soda Valerianas. 
Take of Bichromate of Potash, in powder, nine ounces. 
Fusel oil, four fluid ounces. 
Oil of Vitriol of Commerce, six fluid ounces and a half. 
Water, half a gallon. 
Solution of Caustic Soda, one pint, or as much as may be suffi- 
cient. 
Dilute the oil of vitriol with ten ounces, and dissolve with the 
aid of heat, the bichromate of potash, in the remainder of the wa- 
ter. When both solutions have cooled down to nearly the tem- 
perature of the atmosphere, place them in a matrass, and, having 
added the fusel oil, mix well by repeated shaking, until the tem- 
perature of the mixture, which at first rises to 190°, has fallen to 
80° or 90°. The matrass having been now connected with a con- 
denser, heat is to be applied so as to distil over, about half a gallon 
of liquid. Let this, when exactly saturated with the solution of 
caustic soda, be separated from a little oil that floats on its surface, 
and evaporated down until the escape of aqueous vapor having 
entirely ceased, the residual salt is partially liquified. The heat 
should now be withdrawn, and when the valerianate of soda has 
concreted, it is, while still warm, to be divided into fragments, and 
preserved in a well stopped bottle." 
In this process valerianic acid is formed by the oxidizing action 
