good appetite gratified without reason or judgment. — Ibicl., v. 66, 
p. 566. 
RESINA SCAMMONII. 
Francis, John M., points out that this resin is presumed to be made 
from the crude gum-resin produced by incising the green root of the 
Convolvulus scammonia ; in other words, it is a purified scammony. 
He doubts very much whether any appreciable quantity of the resin 
is produced by this roundabout method, and thinks it cheaper and 
more rational to extract the cured root with hot alcohol and pre- 
cipitate and purify the resin by the usual method. He attributes the 
sudden reduction in price some years ago to the introduction of so- 
called “ Mexican scammony root," Ipomoea orizabensis. — Bull. Pharm., 
Detroit, 1906, v. 20, p. 185. 
Patch, E. L., asserts that resin freshly prepared from virgin 
scammony will turn red with sulphuric acid and the addition of 15 
per cent of rosin makes little difference. He outlines a test for 
rosin, using solution of potassium hydroxide, heat, and hydrochloric 
acid. — Proc. Am. Pharm. Ass., 1906, v. 54, p. 345. 
RESORCINOL. 
Riedel’s Berichte (Berl., 1906, p. 26) reviews the melting point 
quoted by various authors and asserts that carefully recrystallized 
and dried material will melt at 110-111° C. ; heating rapidly, it may 
require as much as 116° C. to melt. resorcin. 
Francis, John M., points out that the melting point of the best 
brands of resorcin average about 113° to 115° C. and that of melting 
point 119° seems to be unobtainable. — Bull. Pharm., Detroit, 1906, 
v. 20, p. 185. 
Smith, Kline & French Co. point out that the resorcinol of the 
market is of excellent qualit}^. All the samples examined by them 
had a melting point of 112° to 113° C. — Lab. Rep., S., K. & F., 1906, 
p. 20. 
Wiebelitz, H., asserts that an aqueous solution of resorcin is inva- 
riably acid in reaction. — Pharm. Ztg., Berl., 1906, v. 51, p. 1004. 
Carobbio, Arturo, outlines a method for the detection of resorcin 
in presence of phenol, naphthol, acetanilide, or other similar com- 
pounds. — Boll. chim. farm., Milan, 1906, v. 45, p. 365. 
RHAMNUS PURSHIANA. 
Henkel, Alice, mentions Rhamnus purshiana DC., also called 
cascara sagrada, chittem-bark, sacred-bark, and bearberry-tree, as 
being found on the sides and bottoms of canyons, Rocky Mountains, 
west to the Pacific Ocean, and extending north into British Amer- 
ica. — Bui. Bur. Plant Ind., U. S. Dept. Agri., 1906, No. 89, p. 58. 
