109 
Taking two atoms of water from Ci 2 H 8 0 2 , the formula of 
benzole, C 12 H 6 , remains. I tried to form this carbo-hydrogen 
by distilling the resin ; the distillate bad a strong smell of 
carbolic acid ; I acted on it with nitric acid ; oxidation took 
place immediately after the addition of the acid. I now added 
water, which gave a yellow deposit. I dissolved the latter 
in alcohol, but on evaporating the alcohol I obtained a resin 
of the same appearance as the original one. Nitrobenzole 
had not been formed. 
The two resins are of a constant composition, which is 
proved by the accordance between the third and the fourth 
analyses, which were made with specimens prepared at 
different times. 
In order to ascertain whether formic or acetic acid takes 
part in the formation of the resins, I made two other experi- 
ments. In one case I added acetate of soda to the caustic 
soda aud alcohol, and in the second case formiate of soda. I 
analysed the products, and arrived at the following results : 
I, 0*2050 grm. (acetate of soda) gave 0*6190 gnu. carbonic 
acid and 0*1625 grm. water. 
II. 0*2255 grm. (acetate of soda) gave 0*6800 grm. car- 
bonic acid and 0*1745 grm. water. 
These numbers lead to the following composition : 
I. 
II. 
c 
82*37 
82-24 
H 
8-80 
8-58 
O 
8-83 
9-18 
100-00 
100-00 
The formula C 28 H 18 
0 2 requires 
C 
82-90 
H.... 
8-91 
O,... 
8-19 
