tices 
Messrs. Wohler and Dean on Tellurmethyle. 321 
1 . 
and’ precipitation with nitrate of silver; the tellurium by.decom- 
posing the compound with aqua-regia, evaporating to dryness, re- 
dissolving and precipitating. with sulphite of ammonia. 
0:265 grm. gave 0:0525 grm. CO» and 0-0386 grm. HO. 
0:2665 grm. gave 0-305 germ. Agl. : 
02721 grm. gave 0-085 grm. Te. 
Orin 100 parts. se Found. * 
| ae ee aes ee 
H; 1°45 - ~ - - 161 
Te 31:12 - - -~ = 31-24 
I 61:62 - - * - 61°54 
100-00 99:79 
lodid of tellurmethyle is but slightly soluble in cold water, 
much more so in warm; it dissolves in large quantity and im- 
parts a reddish yellow color to alcohol. om both liquids it 
crystallizes in small, shining, vermilion colored prisms, which 
are largest when obtained from an alcoholic solution. They ap- 
pear to be rhombic octahedrons. If the cold alcoholic solution 
is@nixed with about an equal volume of water, the iodid is pre- 
cipitated as a citron-yellow precipitate, but after a few moments, 
One Sees in the fluid a disturbance, and soon the entire precipitate 
whilst still in suspension is changed into glittering, crystalline 
Plates of a vermilion color. This body, like iodi mercury, 
has two different states, one yellow and one red, connected prob- 
ably in both cases with a dimorphous condition. All endeavors 
have failed so far to preserve and crystallize either in the yellow 
orm. By spontaneous evaporation of the alcoholic solution in 
which it is certainly contained in the yellow form, red crystals 
are obtained, and it is not fusible without decomposition. At 
about 130° C. it is changed into black iodid of tellurium. A cyan- 
ogen compound we were not able to obtain; at least by dissolving 
oxyd of tellurmethyle in aqueous hydrocyanic acid: by evapora- 
tion the base remained unchanged. 
ere appears also to be a sulphur compound which we were 
unable to study farther from lack of material. If hydrosulphuric 
acid gas be conducted into a solution of the chlorid of tellur- 
methyle, a white flocculent precipitate is formed, which becomes 
the air a most insupporta- 
vs : Sun ma 
