MINUTES OF THE PHARMACEUTICAL MEETINGS. 343 
The subject of the gelatinization of astringent tinctures 
coming before the 'meeting, the Commission to whom that 
subject had been referred at a previous meeting, requested 
the addition of Augustine Duhamel to their number, which 
was granted. 
Professor Carson called the attention of the meeting to an 
adulteration of Jalap. He stated that a member of the Col- 
lege, during a recent visit to New York, had met with an ar- 
ticle which, under the cognomen of "overgrown jalap," did 
not possess the characters of the drug. It had the aspect of 
being derived from a large fusiform root, was very light and 
spongy, and had none of the resinous appearance of true jalap. 
It was supposed by Prof. C. to be the product of the Ipomoea 
Macrorrhiza, or Mechoacan, which is known to be inert. In 
consideration of its actual introduction into the New York 
market, and the possibility of its being brought here, the sub- 
ject was deemed worthy of the action of a Committee. 
Charles Ellis, Augustine DuhameL and J. H. Ecky, were 
constituted a Committee, and instructed to report at a future 
meeting. 
William Procter, Jr. exhibited a specimen of the fixed oil 
of peach kernels, and stated that, with comparatively mode- 
rate pressure, twenty per cent, of oil could be obtained, with- 
out the application of heat previous to pressure. 
Specimens of the Extractum Stramonii Foliorum, Ex- 
tractum Stramonii Seminis, and Syrupus Senegse, all made 
in accordance with the formulae of the last edition of the U. S. 
Pharmacopoeia, were also presented by the same. 
It was stated that twenty-two pounds of the recent leaves, 
collected on the 20th of September, yielded nine pints of 
juice, which, when coagulated by heat, filtered and evapo- 
rated, produced ten ounces, avoirdupois, of extract, which 
was almost entirely soluble in water. The coagulum, when 
dried, amounted to eight ounces, (avoirdupois,) which shows 
an increase of forty-four per cent, in the strength of the ex- 
tract by its removal. 
