40 
Schwezow, B., reviews the work that has been done with the color 
from red cabbage and gives some account of its uses as an indi- 
cator. — Pharm. Ztg. Berl., 1905, v. 50, p. 990. 
Puckner, W. A., calls attention to the fact that A. Gray Bartlett 
proposed the use of the coloring matter of red cabbage as an indicator 
more than twenty years ago. — Pharm. Review, 1905, v. 23, p. 375. 
Scholtz, M., discusses the use of mixed indicators in connection 
with titrimetric estimations of acids and alkalies. — Abstr. in Pharm. 
Prax., 1905, v. 4, p. 12 (from Ber. d. pharm. Gesellsch.). 
CUDBEAB. 
Tollman, L. M., outlines a method for differentiating between coal- 
tar colors and lichen colors. — Abstr. in Analyst, London, 1905, v. 
30, p. 213. 
Parisen, Geo. TY, gives a formula and outlines a method for pre- 
paring tincture of persionis. — Proc. X. J. Pharm. Ass., 1905, p. 74. 
CUBCTTMA. 
Leach, A. E., discusses the composition of turmeric. — Brit. Food. 
J., 1905, v. 6, p. 252 ; reference from Index Medicus, 1905, p. 299. 
Arzberger discusses the demonstration in powdered rhubarb of 
curcuma, by the use of chloroform and ether as solvents. — Abstr. in 
Deut.-Amer. Apothek. Ztg., X. Y., 1905, v. 26, p. 33 (from Ztschr. d. 
allgem. osterr. A. V.). 
Linde, O., discusses the detection of curcuma and points out that 
other vegetable drugs give similar color reactions with sulphuric 
acid. — Abstr. in Ztschr. f. Unters. d. Xahr. u. Genussm., Berlin, 1905, 
v. 9, p. 696 (from Pharm. J.). 
6. ASH DETERMINATIONS. 
Caeser and Loretz outline a method of making ash determinations, 
which they recommend for routine use. A porcelain crucible is filled 
to about one-third of its capacity with sand and the whole heated 
to redness, then placed in an exsiccator until cool, and weighed. A 
quantity of drug is then placed on the sand and the total weight 
determined. The material is then placed in a drying closet for an 
hour and heated to about 100° C., the weight again taken, to de- 
termine the loss on drying, and the crucible then heated to redness 
to carbonize the contained material. After allowing the crucible to 
cool slightly, the carbonized material is thoroughly mixed with the 
sand and the mixture again heated to redness until all of the carbon 
has been burned off. Should combustion be delayed, it may be ad- 
visable to allow the mixture to cool slightly, shake the sand to one 
side and add from five to ten drops of fuming nitric acid, then heat 
again, and finally add a small quantity of oxalic acid to decompose 
