278 Researches respecting the radical of Benzove Acid. 
chloride of calcium, it is freed from water, alcohol and acid, with 
which it may be adulterated. . 
We could not long remain in doubt respecting the nature of this 
new product; it must be benzoic ether. For if the decomposition of 
chlorobenzéyl by alcohol be analogous to that by water, as is suggested 
by the formation of hydrochloric acid, then through the decomposi- 
tion of water in the alcohol, must benzoic acid on the one hand be 
formed and ether on the other; which two at the moment of their 
origin unite to form benzoic ether. On account of its unexpected 
appearance, we sought to assure ourselves by an analysis, particular- 
ly as this analysis would give us great control over the composition of 
benzoic acid. : 
We did not employ the fluid for analysis, until after careful wash- 
ing with water, the latter was entirely abstracted, by repeated diges- 
tion with muriate of lime, and by several distillations in a dried appa- 
ratus. It is to no purpose to distil it over chloride of calcium, be- 
cause its boiling point is so high, that water passes over at the same 
time. 0.622 gm. gave 1.632 carbonic acid and 0.375 water, which 
in 100 parts is equivalent to, 
Carbon, . , : é ; i 72.529 
Hydrogen, - : ; : ‘ 6.690 
Oxygen, . ‘ ; : : : 20.781 
Or by volume, ; 
18 atoms Carbon, . ‘ 137.5866 : : (24137 
20). 4 Hfydrogeny) )).: 12.4796 ; é 6.56 
4 Oxygen, ' Ay OGOOO) his ydinl id an BING 
These proportions exactly point out a compound of, 
: . Cc H O 
1 atom dry benzoic acid, . é =14-—10-3 
with one atom of ether, . é = 4—10-1 
18—20—4 
To assure ourselves of the perfect identity of benzoic ether thus 
formed, with that prepared after the common method, we produced 
the latter in abundance by the distillation of benzoic acid with a mix- 
ture of alcohol and hydrochloric acid. By comparing the two pro- 
perties of the two bodies obtained by such different methods, not 
the slightest difference was observable. Odor, taste, sp. gr. and be- 
havior to acid and alkali, were in both precisely the same. 
