Part IY,] Simonsen : Constituents of Indian Essential Oils. 3 
clean is also Iiigher than in the case of P. longifolia where it averages 
2 per cent. The rosin was however of good quality and was classed as 
M. grade. 
As will be seen from the sequel the turpentine was much superior 
in quality to that from P. longifolia, being quite equal to American 
turpentine. There can be little doubt that, provided the oleo-resin could 
be collected and delivered at the factory at a cost of Rs. 10 per maund, 
the distillation would prove highly remunerative. 
A careful examination of the oil has shown that it contains d-a 
pinene, d-(3-pinene whilst from the higher boiling fraction longifolene 
was isolated identical in all respects with the sesquiterpene present in 
P. longifolia. The presence of the same sesquiterpene in P. Khasya as in 
P. longifolia is of considerable interest in view of the close botanical 
relationship of these two pines. 
Experimental. 
The oil as received from the factory was carefully dried over 
anhydrous magnesium sulphate and was found to have the following 
constants : — 0’8633, 1‘4675, [a]^° + 32'83°, acid value 
] '9. It was pale yellow in colour and w'as indistingui.shable in 
smeU from American turpentine. 
A considerable quantity was fractionated at the ordinary pressure 
(706 mm.) using a twelve pear Yoimg still head when the following 
fractions were obtained 
No. 
B. P. 
Yield 
per cent. 
30“ 
D 
30“ 
[a] 
*■ ■'d 
I 
153—156^ 
42-2 
0'8546 
1-4625 
+ 38-3“ 
n 
166—160“ 
29-5 
0-855 
1-4637 
+ 34-6“ 
in 
160—165“ . 
9-5 
0'8556 
1-4665 
+ 27-48“ 
rv 
Residue in flask 
15-2 
The residue in the flask which consisted mainly of a sesquiterpene 
was repeatedly refractionated under diminished pressure (39mm.) when 
it was separated into two main fractions (A) boiling below 135° and (B) 
boiling from 135 — 160°. Fraction A was refractionated at the ordinary 
pressure (706mm.) using a twelve pear Young still head when it 
was found to distil mainly between 160-175°. The fraction distilling 
[ 113 ] 
