116 Scientific Intelligence. 
is formed. All the four equivalents of hydrogen in the molecule of pro- 
pyl-phycit may be replaced by other radicals, simple or compound; thus 
the lead salt has the formula = we Og. The author describes various 
ethers derived from the new alcolick; the formule of which are as follows: 
Mono-nitrate, HNO, 1 O.. 
: C,H 
Droste oes RS a ocyt Os 
Tetracetate, (oit.6, Je ' Ov 
Triethy] ether, nic “a ) t O, 
40° 5/3 
Tetrethyl-ether, Pat ) L O.. 
a" 5/4 
C,H, 
Diaceto-diethyl ether, (C,H,)., OF 
(C,H,0.). 
These compounds are of special interest as illustrating the tetratomic 
character of the new radical C,H,, and as establishing the existence of 
o suga 
higher order, A tetracid alcohol will form four chlorids by the successive 
replacement of HO, by Cl. Thus we should have ap 0,, Cole Og 
cl? 
: 3 
“attos CoH} ef , CoH,.Cly. Of these two chlorids, the second 
in order, namely, Coie tof , was obtained by the author from glycerine 
and formed the starting point of the present investigation Ann. der 
Chemie und Pharm., exxxiv, p. 71. 
Il. MINERALOGY AND GEOLOGY, 
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re-issues the whole, consisting of ninety-seven large octavo pages of text, 
with intercalated wood-cuts, and nine well executed plates containing 
about one hundred and sixty figures. The fact that these figures were 
proportion of theft par, (Oct 850) whieh en 
ion oO part, - 1859), which was 
for some after; while we did not receive the last part, nor 
antil about the middle.of February, 1861. 
