Paet III.] PuRAN Singh : Note on Manufr. of N gai Camphor. 279 
This analysis shows that the percentage of the oil in the dry withered 
leaves calculated on the sample with moisture is greater than in the fresh 
green leaves, but it will be seen that the same calculated on perfectly 
dry leaves is much less than in the case of the fresh leaves. The conclusion 
to be drawn from this is that the sun had injuriously affected the quantity 
of the oil in the withered leaves. This might also have been inferred from 
the fact of the essential oils being generally greatly volatile. 
Sample No. 3 . — This sample, consisting of leaves and branches packed 
in gunny bags, was thoroughly dried in the shade at Taungoo before its 
despatch to Dehra Dun. On opening the bags the leaves were found to 
be almost like the withered leaves in sample No. 2, but with this difference 
that the camphoraceous odour in them was fainter than in the latter. 
This sample was analysed six months after it was collected. 
Table No. III. 
Sample. 
Blumea balsamifera shade-dried leaves from 
Tauugoo. 
Moisture. 
Volatile oil. 
Volatile oil 
on dry leaves. 
14-70 
1-60 
1-88 
Sample No. 4 . — This sample, consisting partly of fresh and partly shade- 
dried leaves, was from Mawhan forest. It was packed in wooden boxes 
instead of gunny bags, and was received and analysed at Dehra 35 days 
after it had been collected. The leaves were found to be in a mouldy 
condition, some sort of decomposition having set in in the constituents of 
the leaves during transit through want of aeration or some other cause. 
The leaves emitted an almost fetid smell, the odour of camphor being 
only very faint, covered as it was by the hay-like and herbaceous odour of 
dry leaves and the bad smell of the decomposition products of the rotten 
leaves. 
Table No. IV. 
S.imple. 
Moisture. 
1 Volatile oil. 
Volatile oil 
on dry leaves. 
Blumea htlsamiltra (decomposed and rotten 
during transit) from Mawhan fore.st. 
20-90 
j 1-09 
1 -38 
Judging from the percentage yield of the shade- dried leaves and com- 
paring it with the results obtained from fresh green leaves {vide Tables 
Nos. I and II), it will be seen that there is but little difference in the green 
and shade- dried plant, so far as the amount of essential oil in them is 
