~ 
60 od. Walz on the oxydation of Diamylene. 
voluminous mass, which is almost insoluble in water. Two 
analyses showed that the dry salt contained 40°66 and 40°88 
p. c. of silver. 
I. 01773 of the salt yielded 0-0721=40°66 p. c. Ag. 
II. 01634 “ & *-- O0668=4088" 46 
This composition would correspond to several salts, and we 
prefer, therefore, to leave the final decision to further inves- 
tigations, 
The water which distilled with the foregoing acid had a sour 
reaction and the smell pointed to the presence -of acetic acid. 
It was several times partially neutralized with nitrate of sil- 
ver, and the salts which crystallized out, were analyzed: 
I. 0°1589 grms. of the dry salt left 0°1021=64-25 p. c. Ag. 
ai - Glew * oy ds * > ON0BG=63'95.. «. 
ali. 7 ion. & vy is “ .0:0794=6444 “« «& 
iV. O02326-% fe . “sO LG05=6465 ..¢ 
Acetate of silver requires 64°67 p.c. A 
The salt analyzed under IV had er obtained as follows: 
the liquid-was left in contact with the oily acid for several days, 
and shaken with it from time to time in order to dissolve 
as much of it as possible ; it was then separated and subjected 
to a fractional distillation, which was suspended as soon as oily 
acid ceased to distil. The liquid which remained behind in 
the retort was neutralized with nitrate of silver while it was 
precipitate was decomposed with sulphuric acid and a great deal of a 
tarry substance was thus obtained floating on the liquid. It is soluble in alcohol 
and ether, but insoluble in water. When the precipitate is boiled with a concen- 
trated solution of pure potassa, sesquioxyd of chromium is precipitated and a yel- 
