. REVIEW OF THE DUBLIN PHARMACOPOEIA. 
17 
of chromic acid on the fusel oil, and becomes valerianate of soda 
when saturated with the solution of caustic soda and evaporated. 
The fusel oil used for this transformation will be noticed presently. 
Acetum Colchici> is of the same colchicum strength as ours, but 
the menstruum contains twice as much real acetic acid. 
Medicated Waters, are made by agitating a fluid ounce of essence 
(of Anise for example) with half a gallon of distilled water, and 
filtering; except in two instances. Cherry laurel water is distilled 
from the leaves, and Rose water is made by agitating 20 drops of 
oil of roses with half a gallon of distilled water. It is remarkable, 
in view of the well known property of magnesia and other insolu- 
ble powders, in facilitating the solubility of volatile oils, that the 
revisors of this work should not have adopted that method. 
Wines. — But three of these are officinal, those of ipecac, 
opium, and rhubarb. 
In a short supplement we find the following : — 
Alcohol Amylicum — Fusel Oil. — Take of the light liquid, which 
may be obtained at any large distillery by continuing the distilla- 
tion some time after the pure spirit has been all drawn off, any 
quantity. 
Introduce it into a small still or retort connected with a con- 
denser, and apply heat so as to cause distillation ; as soon as the 
oil begins to come over unmixed with water, the receiver should 
be changed, and the distillation being resumed and carried nearly 
to dryness, the desired product will be obtained." 
We give this formula as a sequel to the one for valerianate of 
soda. 
Chloroform. — The only peculiarities noticed in this formula are 
the use of quick lime to the extent of half the weight of the 
chlorinated lime employed, and the rectification of the chloroform, 
after agitation with sulphuric acid, from a little peroxide of 
manganese. 
Elaterium. — A formula for its preparation is given. 
Soda Causticm Liquor, is a solution of caustic soda, sp. gr. 
1.056. 
