Chemistry and Physics. 55 
the place, carefully collected, the sulphur products corresponded 
to a content of sulphuric acid of 0°022 grams per liter or 2-2 grams 
per hectoliter.—Ann. Chem. Phys., V, xxix, 427, July, 1883. 
G. F. B. 
3. On the atomic weight of Antimony.—Boneartz has made 
a series of determinations of the atomic wei 
plates from which the last traces of sulphur were removed by 
fusion with sodium carbonate and subsequent washing with dilute 
ided metal was heated with a 
concentrated solution of potassium sulphide, the solution was 
saturated with hydrogen sulphide, and precipitated with sulphuric 
acid. The washed antimonious sulphide was treated as described 
by Classen, i. e., placed in a flask with dilute hydrochloric acid, 
and the escaping hydrogen sulphide passed through a vertical 
tube filled with glass beads over which an ammoniacal solution of 
hydrogen peroxide trickled. The last traces of H,S were washe 
out by a current of CO,, the absorption tube was rinsed with dis- 
tilled water, the solution acidulated and the sulphuric acid deter- 
mined as barium sulphate. The results of twelve experiments 
are as follows: 120°170, 120°157, 120°091, 120°106, 120°114, 120°175, 
120°390, 120-305, 120°310, 1207155, 120-206, 120°139; the mean of 
all being 120-193. This atomic weight confirms the values here- 
tofore obtained by Schneider and by Cooke.—Ber. Berl. Chem. 
3 x 
Ges., xvi, 1942, Sept., 1883. i 
4. On the constitution of Galician Petroleum.— Lacaowicz 
has submitted to examination the petroleu ryslaw in 
ing a boiling point from 30° to 125°. This was separated into 
three portions, of which the first boiled below 50°, the second be- 
tween 50° and 80° and the third between 80° and 110°. From 
the first, isopentane boiling at 29°-30°, and normal pentane, boil- 
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to 148°5°, and decane, at 152° to 153° were separated. Careful 
examination failed to discover in Galician petroleum any trace of 
hydrocarbons of the ethylene series. Two fractions, one boiling 
from 30° to 125°, mentioned above, the other from 20° to 110°, as 
