SO PT 
Geology and Mineralogy. 417 
and the mixture is distilled in small portions at a time, valeric 
aldehyd is obtained, boiling at 102° C. This aldehyd, by the ac- 
responding ordinary amylic ethers. ne constitution of the nor- 
on CH,.CH,.CH,.CH, 
cH, = oi 
CH, me 
CH, . OH 
while common smart alcohol has probably the formula attributed 
to it by Erlenm 
i, C CH, ( CH, .CH(CH,), 
CH =O. 
CH, H 
CH,.OH OH 
uthors promise a detailed description — ney normal yale- 
ric acid rer its salts.— Comptes Rendus, \xxi, W. G. 
6. Transformation of the fatty acids into ‘hea ae a di 
hols,—Saytzerr has given a method of passing from the fatty 
acids to the thine ites alcohols, which possesses much siete 
est. An amalgam of sodium of 3 per cent is to be im 
into a flask, and a mbase of one molecule of the nary oa and two 
of the acid introduced, the mixture being cooled. — 12 hours 
Il. GEOLOGY AND MINERALOGY. 
1, Laurentian — ee cao Scotia ; by Rev. Dr. HoNEYMAN, 
F.G.S., &¢—In this ant etna aoe neon 
d rystalli d of great 
lithological variety. There was a succession of different kinds of 
diorites and hornblendie rocks, traversed with veins of quartz 
and many granular limestones. These extended about two miles 
along the sen stretching at the same time both into the sea and 
