Part I.] Puran Singh: Turpentine Oil and Indian Rosin. 19 
way, and Messrs. Turner, Morrison & Co., still complained of its 
leaving a thick greasy lesidue. The oil, as obtained under the 
supervision of Mr. E. A. Smythies, was sent to Messrs. Turner, 
Morrison & Co., Calcutta, and the Chief Store-keeper, North- 
Western Pailway, Lahore, and the reports received were still un¬ 
favourable, though Mr. Smythies was able to sell the whole 
annual output of this oil. 
The three samples sent by Mr. E. A. Smythies to the Forest 
Research Institute Laboratory, on fractional distillation gave the 
following results : — 
I. Bhowali oil received as marked Z (or A+B+C+f D)— 
160°—167° C.72-5 per cent. 
167°—170° C.17-5 „ 
Above 170° C.10-0 „ 
II. The same oil with heavier fractions of D eliminated (pre¬ 
pared by Mr. Smythies)— 
160°—167° C. 
167°—170° C. 
Above 170° C. 
III. North-Western Railway 
150°—155° C. 
155°—160° C. 
Above 160° C. 
. . . 78 per cent. 
15-5 „ 
6-5 „ 
sample-— 
. . . 62-5]per cent. 
37-5* „ 
Nil 
The sample Z, which the writer experimentally prepared at 
Bhowali in 1908, had the following fractions as given in Appendix 
A: — 
155°—160° C. 
160°—165° C. 
165°—172° C. 
Residue above 172° C. 
55 r per cent. 
25 
11 
It will be clear from the above figures that the sample Z pre¬ 
pared afterwards at Bhowali for the whole year was not as good, 
having only 72*5 per cent, passing below 167° C., while the sample' 
originally prepared had 80 per cent, easily passing below 165° C. 
(vide Appendix A). Evidently the control of the process of redis¬ 
tillation was inefficient, as the second sample of Z prepared under 
[ 19 ] 
