40 C. Friedel and J. M. Crafts on Etherification, 
purity, from the products of the reaction of oxalate of amyl on 
oxalate of ethyl, although, when it is isolated and heated alone 
for a certain length of time, it is resolved in part into the bodies | 
from which it was formed. It is this last mentioned property | 
of compounds of the ether class together with their volatility, 7 
which render them peculiarly fitted as material for the study of 7~ 
reactions like those which we have been considering; and the © 
results, obtained by such a study, are not without weight in ques- 7 
tions concerning inorganic compounds, for the analogies between 4 
tificial classification, which, notwithstanding its many advan- | 
tages, has the demerit of separating too widely phenomena which _ 
are dependant on the same general laws. 
Art. VI.—On LEtherijication ; by C. Frrepet and J. M. Crarts. j 3 
Wits the purpose of extending our observations on the class 3 4 
; but we soon recognized that, although these bodies — 
are easily decomposed by an alcohol at a comparatively low ~ 
Se the reaction is quite different from the one before 
Two tubes were heated twenty-four hours at 160°-180° G. _ 
‘he first contained iodid of amyl with one-half its weight of _ 
eommon alcohol; the second contained iodid of ethyl with an © 
equal weight of amylic alcohol. The contents of the tubes be- _ 
came strongly acid, and a layer of water, containing iodhydric — 
- “i solution, separated on the surface of the liquid in each | 
of them. | q 
- The liquid was washed with water to free it from iodhydrie 4 
acid, and, as the lodids are not acted upon by dondentes 
other products. 
g at 146° [true boiling point =146°), was obtain 
S were made of these p i 
