M2 
On the Cultivation of the Vine , 
ing escaped decomposition is precipitated with the ear- 
bonat of potash : the liquor becomes clear, and the wine 
is made. 
Yinous fermentation, then, is nothing but the continued 
departure of carbon and oxygen, which produces on one 
hand the carbonic acid, and on the other alcohol. The 
celebrated Lavoisier subjected to calculation all the phe- 
nomena and results of vinous fermentation, comparing the 
products of the decomposition with its elements. He as- 
sumed as the basis of his calculations the data furnished 
to him by analysis both in regard to the nature and the 
proportions of the constituent principles before and after 
the operation. We shall here transcribe the results ob- 
tained by this great man. * 
Materials of Fermentation for a Quintal of Sugar ; 
Water ...... 
Sugar ..... 
Yeast of beer in paste } Water 
composed of J Dry yeast 
Total 
lib. oz. dr. gr. 
400 0 0 0 
100 0 0 0 
7 3 6 44 
2 12 1 28 
510 0 0 0 
Detail of the constituent Principles of the Materials 
of Fermentation . 
lib. 
oz. 
dr. 
gr. 
407 
3 
6 
44 
Of water composed of 
lib. 
oz. 
dr. 
gr. 
Hydrogen 
61 
1 
2 
71*40 
Oxygen 
346 
2 
3 
44-60 
100 
o 
0 
0 
Sugar composed of 
Hydrogen 
8 
0 
0 
0 
Oxygen 
64 
0 
0 
0 
Carbon 
28 
0 
0 
0 
2 
12 
1 
28 
Dry yeast composed of 
Carbon 
0 
12 
4 
59-00 
Azot 
0 
0 
5 
2-94 
Hydrogen 
0 
4 
5 
9-30 
Oxygen 
l 
10 
2 
28-76 
Total 
510 
0 
0 
0 
* Elements of Chemistry, p. 190 
