255 
contain as high as 15 per cent of material insoluble in alcohol and 
18 per cent of matter insoluble in ammonia. — Bull. Soc. Roy. de 
Pharm. de Bruxelles, 1905, v. 49, p. 303. 
RESINA SCAMMONII. 
Guiges, P., calls attention to the unsatisfactory nature of the 
ether test for scammony resin and points out that much of the 
scammony of commerce is made from Ipomcea orizabensis , the so- 
called American scammony. — J. de Pharm. et de Chim., Paris, 1905, 
v. 22, p. 241. 
RESORCINOL. 
Kaiser, Sigism., reports the observations made in connection with 
a case of lupus in Avhich a 50 per cent resorcin ointment had been 
used with nearly fatal result. — Apoth. Ztg., Berlin, 1905, v. 20, p. 656 
(from Berl. Klin. Wchnschr., 1905, v. 42, p. 1039). 
RHAMNUS PURSHIANA. 
Eberle, E. G., mentions Rhamnus purshiana among the medicinal 
plants of Texas. — Proc. Am. Pharm. Ass., 1905, v. 53, p. 305. 
True, Rodney H., says that Rhamnus purshiana is grown at Wash- 
ington, D. C., as seedlings of different ages, and as young trans- 
planted trees shipped from the State of Washington.- — Proc. Am. 
Pharm. Ass., 1905, v. 53, p. 275. 
Zeig, A. C., presents an exhaustive account of the introduction, 
method of collecting and marketing of cascara sagrada. — Pharm. 
Era, 1905, v. 34, p. 150. 
Groff, John E., in a paper written for the Lewis and Clark Pharma- 
ceutical Congress, presents a collection of interesting facts relating 
to the history, pharmacognosy, chemical composition, and pharma- 
cology of cascara sagrada. — Am. Druggist, N. Y., 1905, v. 47, p. 264. 
Brown, J. Lee, describes the methods employed in gathering, peel- 
ing, drying, breaking, packing, and marketing cascara bark. — West- 
ern Druggist, 1905, v. 27, p. 701. 
Yanderkleed, Charles E., outlines a method for the assay of emodin- 
yielding drugs. — Proc. Pennsylvania Pharm. Ass., 1905, p. 193. 
Panchaud, Adalb., has repeatedly found but 0.5 per cent of emodin 
in the fluid extract of Rhamnus purshiana. He also believes that the 
addition of magnesia to the drug, before percolating, to remove or 
to modify the bitter principle, tends to unite with a portion of the 
emodin and make it insoluble in the prescribed menstruum. He 
recommends a menstruum containing at least 50 per cent of alco- 
hol. — Schweiz. Wchnschr. f. Chem. u, Pharm., 1905, v. 43, p. 520. 
