280 
VARIETIES. 
The different sorts of volatile oil which are obtained from varieties of 
citrons, oranges, and lemons, in different states of maturity, are the most 
important, and, therefore, it is most important to ascertain their purity and 
goodness. 
Forster gives the following formula for the preparation of a fine Eau de 
Cologne : Take of rectified spirit of 82 per cent, of Tralles (=sp. gr. 0.855) 
6 [wine] quarts ; essence of oranges, essence of bergamot, essence of citron, 
essence of limette, and essence of petits grains, of each ^j ; essence of 
cedro, essence of cedrat, essence de Portugal, and essence de neroli, of each 
^ss ; oil of rosemary, 3ij ; and oil of thyme, 3j. 
Otto gives the following formula for a good Eau de Cologne ; Rectified 
spirit of 86 per cent, of Tralles (=0.846 sp. gr.) 200 [wine] quarts ; oil of 
citrons, lb.iv; oil of bergamot lb.ij ; oil of neroli fib. ; oil of lavender lb.ss ; 
oil of rosemary, £lb., and spirit of ammonia, ^ss. Mix. — Pharm. Journal, 
March, 1851. 
Adulteration of Opium with Salep Powder. — A peculiar adulteration of 
opium was discovered by Landerer in preparing laudanum from an appa- 
rently very good opium, obtained direct from Smyrna. After several hours' 
digestion the tincture assumed a slimy or mucilaginous condition, and in a 
few days assumed a gelatiniform condition, and could not be poured out 
from the glass. By a careful examination, salep powder in large propor- 
tion was discovered in the opium ; and the author was afterwards informed, 
that this is a very common adulteration, which is practiced in order to make 
the opium harder, and accelerate the process of drying it, — Buchner's 
Repertorium, Bd. vi. Heft. 3, p. 349. 
[Dr. Pereira (Elements of Materia Medica, vol. ii., p. 1742, second edition) 
mentions a kind of opium which contained a gelatinous substance; and Mr- 
Morson (Pharm. Journ., vol. iv. p. 503) has described an opium which 
yielded a bulky gelatinous-looking mass. — Ed. Pharm. Journ.'] 
The Copyright of a Pharmacopoeia. — It is reported that " King and 
Queen's College of Physicians of Ireland" has assigned its interest in the 
Dublin Pharmacopoeia to Dr. Apjohn, who has announced his intention of 
proceeding by injunction against all those who shall copy the work. This 
threat is levelled against the authors of Dispensatories, or other works on 
Materia Medica, containing the formulae of the three colleges, placed in 
juxtaposition for the convenience of the medical practitioner, the dispenser, 
and the student. We have heard the names of three authors who are 
already singled out for attack. We understand that in the case of one of 
of these gentlemen (Dr. Neligan,) Dr. Apjohn served him with a notice 
a day or two before the appearance of the third edition of his " Medicines, 
their Uses and Mode of Application," warning him not to commit a "breach 
of the law," in introducing the alterations or additions of the new Dublin 
Pharmacopoeia. 
