’ 
<i) 
q 
: 
si 
sr 
4 
Geology and Natural History. 459 
With one molecule of chloracetyl or chlorbenzoyl, the reaction is 
different ; thus we have— 
Si(€,H,),(8€,H,),+€,H,OCl=Si(€,H,),Cl(O€,H,). 
Silicium-diethyl-chlorethin, Si(€,H,),Cl(O©,H,), boils at 148° 
C.; silicium-diethyl chloride, Si(€,H,),Cl,, at 129°C. Both 
are liquids which fume in the air, and burn with a green bor- 
h 
e 
diethyl chloride the author obtained a viscid syrup, the analyses 
of which agreed tolerably with the formula, Si(€,H,).0. The 
rmula. 
the further action of sodium and zinc-ethyl upon silicium-diethyl 
ing t rmula, 
at 153°C. Todhydric acid reacts with this body according to the 
equation : 
28i(€,H,),(0€,H,)+21H = (Si(€,H,) 3)20-+2€,H,1+ OH,. 
Silicium triethyl oxide, (Si(€,H,),).0, was first obtained by 
Friedel and Crafts. The new reaction furnishes a method of ob- 
taining it more easily. In conclusion, the author points out a cer- 
tain regularity in the physical properties of the best known mem- 
bers of the silicium-ethyl series. We have— 
Boiling point. Density at 0°, 
Silicic ether, SiH .)50, 166°°5 0°9676 
Silico-prop. ether, Si(€,H;),85 158°°5 0.9207 
Silico-diethyl-keton, Si(€,H,),02 155°°5 0°8752 
Silico-heptyl ether, Si(€,H,),0 153° 0°8414 
Silicium-ethyl, Si(€,H, 152°°5 0°7657 
4 
—Berichte der Deutschen Chem. Gesellschaft, Jahrgang iv, 
726. w. G. 
IL Grotogy AND NaturAL History. 
_ Triassic Sandstone of the Palisade Range.—The Triassic (or 
Triassico-Jurassic) rock, in New Jersey, as well as Connecticut, is 
generally a distinct granitic sandstone, that is, it 1s largely made 
up of pulverized granite or gneiss. This rock in the Palisade 
ersey fine-grained sandstones were made 
was albitic. The rock from the Newark quarries consists, accord- 
ing to him, of albite 50°46 per cent, quartz 45°49, soluble silica 
