333 
cent assayed below 6 per cent, the highest being 10.5 per cent. — Bull. 
Pharm. Detroit, 1906, v. 20, p. 56. 
Weigel, G., points out that the minimum content of resin in Tubera 
Jalapse Pli. Xdl. IV is 8 per cent, determined by extracting with 
hot alcohol, in a reflux condenser, washing the resin with hot water 
and drying at 105° C. — Pharm. Zentralli. 1906, v. 47, p. 440. 
The Pli. Brit. Committee of Reference in Pharmacy report recom- 
mends to retain the present standard for jalap and give description 
of powder. — Chem. & Drug., Bond., 1906, v. 69, p. 864. 
Schiefl'elin, Wm. Jay, speaking for the committee of the X. W. 
D. A., suggested that the standard for jalap be reduced from 8 per 
cent of total resin to 5.6 per cent. — Am. Druggist, X. Y., 1906, v. 49, 
p. 347. 
Dohme, A. R. L., reports that seven chemists operating on the same 
sample of jalap, by the same process, found from 8.59 to 9.12 per 
cent of resin. — Ibid ., v. 49, p. 268. 
Moore, Russell W., presents a report on the examination of 276 
samples of jalap. Only 15 of these samples complied with the 11 
per cent of resin prescribed by the Treasury regulations. The maxi- 
mum resin content was 15.63 per cent, the minimum 2.10, and the 
average 5.95 per cent. — J. Soc. Chem. Inch Lonch, 1906, v. 25, p. 627. 
(See also Oil, Paint and Drug Rep. X. Y., 1906, v. 70, Sept. 3, p. 39.) 
Caesar & Loretz report that the resin content of jalap varies con- 
siderablv and that the several samples examined by them yielded 
from 5.5 to 13 per cent. The greater portion of. the available drug 
yielding but 5.5 to 7.5 per cent of resin, while the exceptionally good 
drug varied from 11 to 13 per cent. They outline a method for 
determining the amount of resin in Jalap and also suggest that the 
moisture content of the tubers be estimated. — Geschafts-Ber. v. Caesar 
& Loretz, 1906, p. 70, 119. 
Weigel, G., points out that a consignment of jalap, partially de- 
stroyed by insects and therefore unsightly, was found, on examina- 
tion, to yield 12 per cent of resin. This was thought to be due to 
the fact that the insects had devoured only the starchy portion of 
the tubers and had left the resinous material. — Pharm. Zentralli., 
1906, v. 47, p. 892. 
Philipp Roder, Wien, reports examining 15 samples of jalap which 
varied from 3.61 to 8.61 per cent of ash and yielded from 5.82 to 16.70 
per cent of resin. Four of these samples did not meet the minimum 
Ph. Austr. VIII requirement of 10 per cent of resin and 5 exceeded 
the 5 per cent limit for ash. — Pharm. Post, Wien, 1906, v. 39, p. 284. 
Evans Sons Lescher and Webb report that they have examined a 
large number of samples of jalap to determine the content of resin. 
One sample was as low as 4.2 per cent. The average content was 
about 7 per cent, twenty lots ranging from 5.26 per cent to 13.3 per 
