M. VILMORIN’S RESEARCHES. 319 
13th Oct., 1854, - - - 10:14 without znversion.* 
of which was uncrystal- 
14th Nov., 1854, ei AU ot lizable 112. 
crystallizable sugar 43. 
The amount of alcohol has been determined by a direct fermentation. 
The following are the figures in the order of trial : 
The figures express the absolute yield of alcohol per litre, in the 
cubic centimetres. 
Sorgho at Verriéres : 
28th Sept., 1854, Eee ee sey eae 
4th Oct., 1854, -- -.. 7,7. 54 
Sorgho of Algiers : 
1st fermentation, 17th Oct.,1854, - 70. by the Salleron 
2nd trial some hours afterwards - 74. } apparatus. 
70:52 on distill. 1 litre 20. 
2nd fermentation 18th Oct., 1854, - 79°52 
Sorgho at Verrieéres : 
20th Oct., - - - - - ‘2-51 on distillation 1 litre 
16th Nov., - - - - - 63:26 tops removed. 
AC ee eo © eae 60°67 tops not removed. 
If we withdraw from this table the yield of the 28th September, 
which applies to plants evidently too young, and the four others relat- 
ing to the Algerian sorgho, I find as an average for our climate, 6.3 
per cent. in value, or 63 cubic centimetres of alcohol to the litre of 
sap: an amount which, as one may see, is very encouraging, especially 
if we consider the excellent quality of the products. 
Establishing our calculation for yield on the basis previously given, 
we have for a hectare planted with sorgho: 
Stalks and leaves, _-  - oi 82 UR 2GOks 
Stalks alone, - - - - - 49°300 
Sap at 55 per cent. of the weight of the 
stalks,  - bem Eta potent 27°115 lit. or 271 hectols. 
* Inversion. This word is left in the original, because we cannot translate it liter- 
ally, and make proper sense, It means, in this case, without the addition of foreign 
matter. 
