176 
sealed tubes with acetate of potash and glacial acetic acid 
to a temperature of 130° — 140° C. for three or four hours, a 
volatile fragrant liquid, having the characteristic odour of 
acetic ether, which, after drying over chloride of calcium 
and magnesia, boiled at 74*0 — 75*5° C. Kopp gives the 
boiling point of ethyl acetate at 74*3 under a pressure of 
760 mm. of mercury. 
In order to prepare the alcohol, the acetate was heated 
with crystals of baryta hydrate in sealed tubes for one or 
two hours, to a temperature of 120° C. ; after cooling 
it was distilled, and the distillate treated with dry car- 
bonate of potash until it separated into two layers, the 
upper one was decanted upon fused carbonate, afterwards 
upon anhydrous baryta, from which it was distilled, when 
it had assumed a light amber colour. It began to boil at 
78*1° the whole coming over before the temperature exceeded 
79*0° C. Kopp gives the boiling point of ethyl alcohol pre- 
pared by fermentation at 78*4° C. under a pressure of 760 
mm. mercury, and the specific gravity at 0° C. as 0*8095 ; 
calculating by means of his coefficient of expansion the 
Sp. Gr. at 6° C. would be 0*80446, whilst I found the same 
to be 0*80302 at the same temperature. 
The alcohol thus prepared had very little odour, agreeing 
in this respect with the observation of Meudelejeff ( Zeit- 
schrift Chemie, 1865, 257 ) though the specific gravity is 
slightly higher than his at the same temperature calculated 
from his coefficient of expansion, viz. 0*80123. 
On submitting this liquid to combustion analysis the fol- 
lowing numbers were obtained. 
No. 1. 0*2834 grm. of liquid gave 0*5357 grm. of car- 
bonic acid, and 0*3314 grm. of water. 
No. 2. 0*5533 grm. of liquid gave 1*0481 grm. of car- 
bonic acid, and 0*6480 grm. of water. 
/:. r. 1 t ■ , / h'/ h ; . J U 
