REVIEW OF THE DUBLIN PHARMACOPEIA. 
9 
van, of Dublin, has undertaken to supply, at a moderate cost, the 
Apothecaries' officinal weights. 
Abstractly we are by no means inimical to this change in the 
system of weights — it is a return to the old system, prior to 1720, 
and which never should have been forsaken ; and in a country like 
Ireland, we see no reason why its adoption should not be practi- 
cable ; at the same time we doubt the policy of the change in view of 
the continued use of the Troy standard in the other British and the 
United States Pharmacopoeias. 
The classification of the preparations has been altered in many 
respects. Salts are placed under their generic names instead of that 
of their metallic bases, except the Chlorides, Iodides, and the Alka- 
loid Salts, the whole being arranged in an alphabetical order; thus : 
Acetates, Acids, Alkaloids and their salts, Arsenites, Carbonates, 
Chlorine and its metallic compounds, Citrates, Clysters, Confec- 
tions, Decoctions, Ethers, Extracts, fyc, fyc, the headings of each 
class being in English terms. 
We will now run over the preparations, and note some of the 
novelties that may present. 
Solution of sub-acetate of Lead. — This preparation is made from 
acetate of lead and litharge, as in our own Pharmacopoeia ; but 
is rather more than one half the strength of our solution. The 
diluted solution, or lead water, is about the strength of the United 
States preparation. 
Acetate of Zinc is prepared from acetate of lead and metallic 
zinc, as in the U. S. P. 
Acidum Aceticum Glaciate is prepared from acetate of lead, dried 
at 300° F., and muriatic acid gas ; and not from acetate of potassa 
as before. The powdered kiln-dried acetate contained in a flask, is ex- 
posed in an atmosphere of the acid gas until the acetic acid is dis- 
placed, (which is known by the general dampness of the acetate,) 
when the flask is attached to a Liebig's condenser, and by 
means of a chloride of zinc bath, the acetic acid is distilled over. 
Acidum Aceticum forte is made with 6 parts of the preceding 
acid, and 4 parts of distilled water. 
Acidum Aceticum e ligno venale has been placed in the List, 
and means the commercial (No. 8) acetic acid. This is used in 
making the diluted acetic acid. 
Acidum Benzoicum is prepared by Mohr's process. 
