38 
Indian Forest Records. 
[VOL. IV. 
C 2 denotes third 10 bottles of a charge (when only two 
charges were made in the day, each charge lasting about 
hours against 3 to 3^ hours under ordinary circum¬ 
stances). 
D 2 denotes balance (12 bottles) of a charge (when only 
two charges were made in the day, each charge lasting 
about 5J hours against 3 to 3^ hours under ordinary 
circumstances). 
The following table gives the results of the examination of their 
fractions: — 
TABLE III. 
— 
A 2 ■ 
B, 
C 2 
d 2 
160°—165° C. 
70-5% 
65-0% 
58-5% 
Nil 
165°—172° C. 
16-5% 
20-0% 
24-0% 
20-0% 
i— > 
to 
0 
I, 
00 
o 
0 
p 
8*0% 
6*5% 
7*5% 
35-0% 
180°—200° C. 
Nil 
2-5% 
3*5% 
14-00/ 
Residue above 200° C. 
5-0% 
6-0% 
6-5% 
31-0% 
Specific gravity at 30° C.. 
0-862 
0-865 
0-868 
0-878 
Acid number . 
1-29 
1-29 
1-29 
1-59 
It will be seen that A 2 , B 2 , C 2 have slightly improved and now 
82—86 per cent, instead of 79—83 per cent, of their fractions passes 
below 172° C. The residue above 200° C. practically is the same. 
The specific gravity is normal, that of D 2 being much less, 0*878 in¬ 
stead of 0*880—0*883 as in 1 and 2. The acidity of all the four frac¬ 
tions has become only a trace. In this too D, however, is as bad as 
before. Only 20 per cent, of D passes below 172° C. The residue 
above 200° C. of D is 31 per cent, as against 5—6 per cent, of the 
first three fractions. 
Slow distillation is evidently better than rapid distillation (for 
other reason see page 53). 
[ 38 ] 
