64 
Indian Forest Records. 
[VOL. IV. 
No. 650—15-9, dated 8tli August 1910. The oil was stated to have 
been prepared at the Government Turpentine Distillery at Naini 
Tal from the resin of the “ Chir pine” ( Finns longifolia), and 
it was desired to ascertain its value as compared with the turpen¬ 
tine oil of commerce. 
Description of samples. 
The samples were two in number, marked “ A ”* and “ B,”* 
each sample weighed 16 lbs. and consisted of colourless turpentine 
oil. 
Results of examination. 
The specific gravity and rotatory power of the oils were as 
follows: — 
A B 
Specific gravity at 15° C. . . 0-871 0-868 
Optical rotation in 100 mm. tube . —0° 45 1 —2° 10 1 
The samples w T ere subjected to fractional distillation with the 
following results: — 
— 
A 
B 
Percentage 
of total 
sample by 
volume. 
Optical 
rotation 
in 100 mm. 
tube. 
Percentage 
of total 
sample by 
volume. 
Optical 
rotation 
in 100 mm. 
tube. 
Fraction boiling at— 
165° C. or below 
1 
—9°45' 
1 
165° C. to 170° C. . 
54 
—5° 15' 
55 
—7° 15' 
170° C. to 175° C. . 
25 
O' ^ 
28 
+0° 20' 
175° C. to 195° C. . 
12 
+6° 35' 
9 
+7° 5' 
Residue 
7 
+ 10° 45' 
6 
+ 17° 25' 
* A and B are spirit-distilled samples of turpentine oil, A being a slowly dis¬ 
tilled one and B being a rapidly distilled one. For the results of fractional dis¬ 
tillation of A and B obtained at Bhowali and Dehra, see pp. 26, 27 and 28 of this 
Note, and for those of A obtained at Pusa, see p. 30. 
[ 64 ] 
