448 
louze in 1838, and the attempts at practical application made by 
Schonbein in 1846. — Sc. Am. Suppl., 1906, v. 61, pp. 25447, 25448. 
Lunge, G., discusses the production and the properties of pyroxy- 
lin. — Ztschr. f. ang. Client., Berl., 1906, v. 19, part 2, pp. 2051-2058. 
An unsigned article describes the production of gun cotton of 
various grades, the production of soluble gun cotton, and enumer- 
ates the solvents for the latter. — Sc. Am. Suppl., 1906, v. 61, pp. 25394, 
25507. 
QUERCUS. 
Henkel, Alice, mentions Quercus alba L., commonly called quercus, 
white oak, and stone oak, as being found in woods from Maine to 
Minnesota, south to Florida and Texas; more abundant in the Mid- 
dle States.— Bui. Bur. Plant Ind., U. S. Dept. Agric., 1906, No. 89, 
p. 57. 
Schneider, Albert, states that the fresh galls of the oak are used by 
tli Indians for sore eyes and the bark to check diarrhoea. — Merck’s 
Pep., N. Y., 1906, v. 15, p. 127. 
Berthelot discusses the insoluble potassium compounds that exist 
especially in the leaves, in preference to the trunk (wood and bark). — 
Compt. rend. Acad, des Sc., Par., 1906, v. 142, pp. 313-316. 
QUILLAJA. 
An editorial reviews the efforts that are being made to induce East 
Indian planters to devote a part of their acreage to the growing of 
soap bark. — Oil, Paint and Drug Pep., 1906, v. 70, July 30, p. 7. 
Holmes, E. M., calls attention to a quillaia bark quite different in 
appearance from that usually met. He describes the characteristics 
of the bark and suggests that it is probably derived from a different 
species of Quillaia , as there are two other species indigenous to Chili, 
whence Quillaia saponaria is derived. — Pharm. J., Bond., 1906, v. 
22, p. 315. 
Hemmans, L. F., (Brit. M. J., Bond., i, p. 318) discusses the use 
of quillaia as an emulsifying agent. — Peference from Index Medicus, 
1906, p. 277. 
Zickgraf discusses the use of a decoction of quillaja in the treat- 
ment of the upper respiratory passages and concludes that in the 
majority of cases of chronic bronchitis and of emphysema the local 
use of a decoction of quillaja, as a gargle, is a harmless and excellent 
expectorant. — Therap. d. Gegenw., Berl., 1906, v. 47, pp. 160-163. 
QUININA. 
Francis, John M., finds the specifications for quinine salts, while 
practically the same, more accurate than heretofore, with the excep- 
