10 
REVIEW OF THE DUBLIN PHARMACOPOEIA. 
Acidum Gallicum has been introduced, and two processes given 
for its preparation. The first by atmospheric action on moistened 
powdered galls, the other by the action of sulphuric acid on a 
strong infusion of galls. 
Acidum Hydrocyanicum Dilutum. — This acid is directed to be 
prepared by mixing two ounces of ferrocyanide of potassium dis- 
solved in 8 ounces of water, with one fluid ounce of oil of vitriol 
diluted with four ounces of water, and the mixture distilled from 
a retort or matrass, using a Liebig's condenser, until eight ounces 
be distilled over. The distillate is then diluted with as much dis- 
tilled water as will make the whole measure sixteen fluid ounces. 
The specific gravity of the product is said to be .997. 
We consider this formula decidedly faulty, and calculated to 
yield a product of uncertain strength. No water is placed in the 
receiver to absorb the first vapors, rich in hydrocyanic acid, 
and which, if the apparatus is not very tight, and the refrigeration 
very complete, will be lost. No check is given to regulate the 
strength of the final product, it being assumed that the first eight 
ounces will always contain the same amount of real acid. Specific 
gravity, where the liquid varies only .003 from the standard of 
comparison, is too uncertain a criterion, and we are surprised that 
the saturating power of the acid in reference to nitrate of silver, 
should have been omitted. The uncertainty of this process has 
been practically illustrated in the Pharmaceutical Journal, 
November, 1850. 
Acidum NitricumPurum. — The strength of this acid is 1.5. 
Morphia is prepared by Gregory & Robertson's process. 
Acetate of Morphia. — Alcohol is substituted for water in this 
formulae. We presume the object is to effect the evaporation 
with less injury to the salt. 
Morphia Acetatis Liquor contains 4 ^ 6 grs. to a fluid ounce of 
weak spirit. 
Morphia Muriatis Liquor contains A\ grs. to a fluid ounce of 
weak spirit. 
Quince Murias is officinal, and made by double decomposition 
between sulphate of quinia and chloride of barium. 
Strychnice Murias has been introduced. 
Ferri Carbonas Saccharatum has been introduced from the 
Edinburgh Pharmacopoeia. 
