128 
ous. At first the dose should not exceed of a grain ; but subsequently it 
may be increased with caution to jfe of a grain and in special (poison) cases 
even to ts grain. — Hahnemann. Month., Phila., 1905, v. 40, p. 371. 
See also under “ Therapeutic uses.” — IMd., pp. 509-520. 
BENZALDEHYDTJM. 
Francis, John M., points out that probably the use of benzaldehyde 
will be an advantage when the uncertain quality and the instability 
of the natural oil is taken into consideration, but care must be exer- 
cised to obtain a properly refined article. The pharmacist should 
remember to test for u chlorinated products.” — Bull. Pharm., De- 
troit, 1905, v. 21, p. 362. 
In an editorial note on the U. S. P., VIII, it is pointed out that 
the official product is required to be free from chlorine, a requirement 
rather difficult to comply with, as most of the commercial samples 
contain rather more than 0.2 per cent of chlorine. It is possible to 
obtain a chlorine-free product, however, at an enhanced price. — Drug 
Topics, 1905, v. 20, p. 196. 
Umney and Bennett, in discussing benzaldehyde estimation, point 
out that this is not likely to give identical results in the hands of 
different operators. The end reaction is not sharp, and comparable 
results will only be obtained by practice. — Pharm. J., Lond., 1905, 
v. 21, p. 145. 
Bourquelot and Danjou (J. d. pharm. et. chim., 1905, p. 154) 
have discovered a glucoside in the leaves, blossoms, and fruit of the 
common elder, Sambucus nigra L., yielding benzaldehyde. They 
outline the method employed in extracting the glucoside.-^-Semi-Ann. 
Kep., Schimmel & Co., 1905, Oct.-Nov., pp. 110-111. 
BENZINUM. 
Baubenheimer, Otto, refers to the confusion which exists between 
the terms benzine, naphtha, and gasoline, and defines these names 
and the substances to which they are properly applicable. Hy- 
drometer 60-69 B. means benzine, usually 62 B. ; Hydrometer 70-79 
B. meanjs naphtha, usually 76 B. ; Hydrometer 80-89 B. means gaso- 
line, usually 86 B. — Proc. Am. Pharm. Ass., 1905, v. 53, p. 428. 
Bridtman (Pharm. Ztg.) discusses the inflammability of benzine. 
He finds that a mixture of 7 volumes of carbon tetrachloride and 3 
volumes of benzine is still inflammable upon the approach of a 
match, and that only when the proportion of 9 of the former to 1 
of the latter is reached does the liquid require heating before it 
ignites.— Abstr. Pharm. Era, 1905, v. 34, p. 556. 
BEKTZOSULPHXNIBUM. 
Francis, John M., points out that competition has led to very 
cheap prices for saccharin (sold under various names), and that as 
