~ 
270 Scientific Intelligence. é 
a 
exhibits the connection between the physical properties of the elements 
and the position which each occupies in the series of which it forms a 
member.— Comptes Rendus, x|v, 709, Nov., 1857. 
A new compounds of silicon—Burr and Wouter have continued 
their investigation of the compounds of silicon with chlorine, &e., am 
ave arrived at many interesting results. When crystalline silicon 1s 
heated below redness in a current of chlorhydrie acid, a volatile liquid is 
formed which appears to be a mixture of various compounds. On distil- 
lation this liquid usually begins to boil at 28° or 30° C.; the temperature 
rises, however, rapidly to 40°-43°, when the greater portion of the liquid 
The boiling point finally rises to over 60°, and in one case 
even to 92°. 
é gies morphous 
drated sesquioxyd Siz03s-+-2HO is a snow Mey x ‘Akalies 
