400 Scientific Intelligence. 
ean be calculated from its molecular weight.—Ann.. Chim. Phys., 
VI, iv, 401, March, 1885. G. F. B. 
2. On the Influence of light on Chemical Reactions. — Some 
time ago Scuram™ pointed out that the action of bromine 
upon crude bromtoluent or upon a solution of parabrom-toluene 
change takes place, however, slowly in diffused daylight, and 
much more rapidly in sunlight. The author has studied the 
of ethyl-benzene in diffused light, a colorless liquid product is ob- 
tained which does not solidify at —20°. istillati 
brown residue remaining in the retort. No bromine product of 
constant boiling point could be isolated. The fraction betwee? 
140° and 160° united directly with bromine and solidified, form 
ing dibromstyrene. The fraction boiling at 180°-190° did B 
combine with bromine and was probably styrene-ethyl ether. 
When the ethyl benzene is treated with a molecule of bromine 1? 
direct sunlight the reaction is violent and the final product 3 
a-pheny|-bromethyl C,H,—CHBr—CH,. More curious still is the 
replacement of the second hydrogen atom by bromine. If oe 
operation be conducted in full sunlight the product is pheny™ 
bromacetene CLH.—CBr,—CH,. While if diffused daylight only 
be allowed to act upon it, the product is dibromstyrene C,B.— 
CHBr—CH,Br.— Ber. Berl. Chem. Ges., xviii, 350, Feb., | ba 
G. F. 
3. On the Salts formed by Tellurium with Acids. — KUEIN 
and Moret have examined the compounds formed by wane es 
with acids and have described the sulphate and the nitrate. 4°" 
lurous nitrate is obtained by dissolving finely divided tellarium 
in an excess of nitric acid of sn. gr. about 1°15 heated to 50 - 
By concentration the salt deposits on cooling in beautiful needles 
— orthorhombic. Analysis shows it to be a basic nitrate 
ormula (Te,O).N.O, i4H,O. It is very easily decom 
ed by water and is very hygro 
: scopic. When in solution 1 
ecomposes slowly in the cold, rapidly at : 
the temperature © a 
