256 Scientific Intelligence. 
described. The authors term the radical, Si€,H,,, silicononyl, and 
compare the hydrate and acetate to the corresponding compounds of ear- 
bon and hydrogen, Cotre t and © 
19. ©, considering silicium to 
H,o 5% g 
has described a very remarkable series of bodies derived from acetylene, 
1 
the precipitate by decantation with strong ammonia sa 
sh brown flocky precipitate, decomposed by chlorhydrie acid with 
formation of subchlorid of copper and acetylene. It oses sal- 
The chlorid of cuprosacety! is obtained by passing acetylene, bubble 
by bubble, into a concentrated solution of subchlorid of co »per in chlo- 
rid of potassium. The gas is absorbed and a yellow precipitate is formed, 
with formation of the oxyd, and by boiling chlorhydric and nitric acids. 
It unites with chlorid of ammoniu 
The argentic compounds of acetylene are analogous to those of copper. 
They may be deduced from the radical C, Ag,H, which the author terms 
yes precipitate first with ammonia and then with distilled water. It 
e 
stance decomposed by chlorhydric acid. The phosphate is a yellow 
eurdy precipitate. Berthelot remarks tha 
of a hydruret upon a metallic salt. The analogy between cuprosacetyl 
and ammonia may be shown by the following formulas : 
