350 
ON ALEPPO SCAMMONY. 
cipitated by ammonia, very appropriate re-agents for distinguish- 
ing propylamine from ammonia. Propylamine, however, treated 
with sulphate of silver, gave me not a white, but a yellowish- 
brown precipitate ; and this result suggested to me the idea, that 
formiate of propylamine might be present. This precipitate was 
easily and perfectly dissolved in caustic liquid ammonia. "With 
an aqueous solution of iodine I acquired at one time, according 
to the quantitative proportion, a brown, and at another time a 
beautiful yellow precipitate, which dissolved in an excess of 
iodide of potassium. I usually employ an aqueous solution of 
iodine in iodide of potassium, instead of the tincture of iodine 
made with spirit of wine. The precipitate produced by iodide 
of potassium is, as I have just stated, either brown or yellow, 
provided that no excess of iodide of potassium be employed. — 
London Pharm. Journal, July, 1252, from Buchners Neu% 
Repertorium. Bd. 1. 
RESULTS OF THE EXAMINATION OF SEVERAL PARCELS OF 
ALEPPO SCAMMOXY. 
Br B. W. Bull, of New York* 
Since the publication of an article upon Virgin Scammony in a 
previous number of this Journal, I have had an opportunity of ex- 
amining four different varieties of scammony received from Con- 
stantinople, under the names, Aleppo Scammony, first ; Aleppo 
Scammony, second ; Tschangari Scammony, and Skilip Scammony. 
No. 1. Aleppo Scammony .first. This occurs in large amorphous 
pieces weighing one or more pounds ; is not covered with any cal- 
careous powder. The fractured surface presents a dark greenish 
resinous appearance. The specific gravity will be found below. 
The caseous odor is not so decided in this specimen as in some of 
the other varieties, confirming, as will be seen from its composi- 
tion, as adduced further on, the remark made in the article above 
alluded to, in regard to the insecurity of relying upon the odor as a 
means of judging of the quality of scammony. 
No. 2. Aleppo Scammony second. Of this a sample of about 
one pound w T as received. This is in amorphous pieces ; it differs 
from the previous specimen in its fracture which is non-resinous 
