140 Journal of the Asiatic Society of Bengal. { April, 1906, 
Therefore in the original wort of 263 gallons— 
1 0 ane oo BL 
(b) The spent wash distilled and the distillate made up 
with water to original volume—- 
Acid 0:028°/, 
Spirit distilled from wort : age seventh day. Distillate made up 
with water to the volume of wort— 
es 
is iret epimt a Pi so¥ Sui See 
(b) Acid s« OO1F/, 
6. Wort ripe for distillation. "cabs and the distillate made up 
with water to the volume of wx 
(a) _— mits i 6 sis 11°/, 
(b) A lis sia a TOES: 
7. Wort similar to above. In the distillate— 
in oe ann ; ine — 
(b) A is sad oie 
8. Spent wash a wort 262 elite, of which 54 gallons had been 
drawn away containing 3°87 gallons P.S. Spent wash ewam- 
ined on 4th June 1904— 
(a) Acid & 2062), 
(b) Sugar (as dextrorse) ee a 1°25°/5 
(c) Acid in wort, about. re ws Ons 
9. Spent wash from wort which had re 4 gallons P.S. Ex- 
amined two days after— 
(a) Acid = ben ees 
(b) Acid i in the wort oa a ee 
10. Spent wash from wort which had Vilded 3°7 gallons P.S. Er- 
amined one day after— 
(a) Acid . ire 
(b) Acid i in the wort .., B%/o 
From these results it appears (1) that wort fit for distillation 
contains from 1} to 3-4°/, of acid (as acetic acid) ; (2) that the 
id fermentation takes place more rapidl during the ear earlier, 
stages of alcoholic fecricartadieal (3) that the production of aci 
is rather slow after it has reached a certain limit ; (4) that ony 
about 0-024°/, of the acid of the wort is drawn aw ay wit the. 
spirit even when distillation has been carried on to collect the last™ 
portion of alcohol; (5) and that spent wash, if distilled, would 
give only about 0-03 or 0°04°/, of acid to the distillate 
— ird inference is of great importance to the distillers, wh whe. 
m experience that yield of spirit is not tib 
— if distillation of wort i is put off for a few gs : 
Now, assuming that a ripe wort contains 12°/, Uf acid ee 
and that the production of the acid could be prevented and t 
