250 On the Properties of Telluramyl aud Selenmethyl. 
with the chlorid, rendering the latter when fused quite black. 
0-8825 grm. dried at 100° C. gave 0 5355 grm. chlorid of silver. 
06597 grm. gave 0°4025 grm. chlorid of silver. 
Found. 
C2 4-8 . 
Hs 12 
Ag 43-2 45-8 45-9 
Sez 31 6 
Os 19:2 
100-0 
These estimations differ somewhat widely from the theoretical 
formula, and it is to be regretted that Jack of material prevente 
us from making further determinations; but the formula is better 
established by the analysis of the chlorine compound, which 
will be presently given. The silver salt heated in a closed tube 
Is very easily decomposed, puffing and burning, forming water, 
selenious acid and selenid of silver. By continued heating of a _ 
solution of the salt even below the boiling point, it is slightly 
decomposed, depositing metallic silver and selenid of silver. 
The crystals themselves by drying in the air change color some- 
what, like all silver salts, showing a beantiful silvery surface ; 
they are slightly decomposed by continued heating at 100° C., 
and burn giving off red vapors of seleninm at 110° to 120° C. 
Baryta Salt.—By neutralizing the acid with ammonia, and 
adding chlorid of barium to the hot solution, the baryta salt Is 
obtained as a white, crystalline precipitate. From the analysis 
of this salt we conid only conclude, owing to the small quan- 
tity we had, that it probably contains two equivalents of baryta 
to one of the acid. ; 
The great difficulty in the analysis of these salts consists 10 
their easy decomposition by heating,.either when dry or in soli- 
tion. They all possess the same smell and disgusting metallic 
taste as the acid itself, 
Chlorine Compound.To a solution of the above-mentioned 
acid hydrochloric acid was added; no precipitate was formed, 
but by gentle evaporation, beautiful transparent needle crystals 
were formed: when free nitric acid was present, only an amor- 
phous mass was obtained. 
_ These crystals, which have a strong acid reaction, are probably 
@ simple substitution product, in which one atom of chlorine 
“abo the place of an atom of oxygen, the reaction being as fo 
lows: | fa 
Se20.+HCl = tee : Se:0.+HO. 
lysis of the crystallized body, dried over chlorid of cal- 
n, gave the following results: 
