“ 
Chemastry and Physics. -s 408 
however, finds that when pure they are slightly yellowish in color, 
the red-violet tint being due either to poly-tellurides or to some 
sub-oxide. If a strongly alkaline solution of a telluride be boiled 
b-oxide. The autl 
that Wohler’s tellurides of methyl and ethyl may be readily ob- 
tained by heating tellurium in powder for 48 hours in contact 
with methyl or ethyl iodide at 80° ©. The two bodies unite to 
form dimethyl diiodide, which decomposes slowly at 100°, rapidly 
120°. From this, other derivatives are obtained.—_Budi. Soe. 
Ch., II, xl, 99, Aug., 1883. G. F. B. 
3. On Caucasian Ozocerites—BrmsTEIN and Wrecanp have 
submitted to an examination the ozocerite obtained from the 
island of Tscheleken in the Caspian Sea. It was a brownish- 
black sticky mass, which dissolved in boiling benzene leaving but 
a trifling residue. On adding alcohol, most of the paraffin was - 
Revo sted, leaving the admixed oils in solution. It was found 
tter, however, to wash the crude material with ether, to remove 
the oil and coloring matter ; and then to extract the residue with 
the authors have given the name lekene, from the island wh e 
occurs, It constitutes the chief constituent of the Caucasian 
ozocerite. It melts at 79° and has a specific gravity of 0°93917. 
p ent color; thus using three parts of oxygen to 
one of hydrocarbon, (CH,)+0,—CO,+H,0, and going to con- 
frm the formu 
into a black crumbly mass, containing no sulphonic acids. Bro- 
Ges., xvi, 1547, July, 1883. G. F. B. 
