264 On the Fermentation and 
The respective gases were occasionally forced into 
the bottles, and mixed with the elastic fluids already 
produced. These operations were continued for 
eight days, and the bags were replenished with fresh 
gas every twenty-four hours. 
The particular phenomena attending the fermen- 
tation of the liquor in each vessel were in no respect 
important, excepting that the flowers on the surface 
were not equal to what might have been expected if 
no gas had been forced in, and that into. which the 
hydrogen gas was thrown was much inferior to the 
the other two. 
From observation I was, at first, scarcely able to 
determine, whether that supplied with a mixture of 
one part oxygen and two of hydrogen, or that which 
was supplied with pure oxygen gas, had the better 
head; but, from close and repeated. inspection, it 
appeared in favour of the latter. 
On distillation, the spirit produced from each was 
as follows. 
By pure Oxygen gas .--.-+-s+--++ 30 0Z. 110° = 
By pure hydrogen gas .......- + 30 eRe ie: 
By a mixture of oxygen and 3 
hydrogen gas seersesseeereeeeees 30 106° 8 
Most that we have learned from the three last 
experiments is, that they are none of them worth 
repeating as objects of profit; but they serve to. 
