sores ov sei seg ons. Hi ee : ie 
land } arge for “ihe: fenliauan of vaaeehyetds: ees? Bel oe slips or 
si iaabed aoe by botanical gardens < and. other’ mutates under the control — 
Behar Bac, owing ‘to he Australian ues: and Pironeri trees that have ident 
planted there. Eucalyptus leaves have been distilled already, but so far this industry — 
> h has not attained to~ any importance. -Puran singh’) publishes some details regarding - 
it The oil of. Eucalyptus Globulus, obtained in the Nilgiri Mountains, answers the 
"requirements of the British Pharmacopceia, but its density is sometimes a little too 
- low. Its properties are: di90 0.9065 to 0.9155, Gy + 5° 28’ to +.9° 39’, Np 1.463 to 1,466, 
g acid v. 0.104 to .0.18, sap. v.8.9 to 20, sap. v. after acetylation 17 to 21.68. It contains #: 
60 per cent. of cineole (determined most likely according to the phosphoric acid method), 
is almost insoluble in alcohol of 70 per cent. but. dissolves in less than 1 vol. of alcohol — 
= ot pr cent. and is ace from pesvestcne Tn addition to cineole, ‘it contains pinene, a 
“ ‘oil, ‘neither eudesmol nor aldehydes. , 
ee The distillation of eucalyptus oil in the Nilgiri Mountains: started about 30 teh 
__ back, but it developed slowly and the annual production now is about 24.000 Ibs., 
the total quantity being sold in India itself. On a whole, 1900 acres are planted with 
| eucalyptus trees. Through felling the trees, 5 tons of leaves are obtained per acre 
By and year. It would be better to prune the trees, but this would be possible only with © 
eo plantations. As long as no fresh plantations can be started, from which leaves ~ 
~ cquid be -obtained by trimming the trees, there is but little ee, aborts to . 
7 _ Singh, of extending the eucalyptus oil industry. 
eos The largest still in the Nilgiris holds about 800 ibe. of leaves, the distillation of 
& which takes 6 hours. In order: to- obtain 1 1b. of oil, about 66 Ibs. of dry or 114 Ibs. 
of fresh leaves are required. The expense for fuel might be reduced to the extent ae 
Eper cent., if the distilled branches and twigs were dried and used for heating, 
The eeaiire green leaves, from trees planted in 1863, yielded 1. 16 per cent. of oil, 
an average, the dry ones. about 2.28 per cent. Green leaves from trees ten years © 
a contained. 0.875. per cent., on an average, dry ones about 1.48 per cent. The leaves. 
from ‘shoots one year old viclded generally 0.83 per cent., if fresh, or 1.61 per cent., if 
_ when the oil content was 1.39 per cent. for the material with 10 per cent. of moisture 
and 1.54 per cent. for absolutely dry material. Leaves dried in the sunshine and which | 
. still contained 9.7 per cent. of moisture, yielded 0.92 percent. of oil, of 1 percent., if 
"calculated for absolutely dry material. It is evident, therefore, that a good amount of - 
oil: is lost on drying the leaves in the sunshine. Singh states that drying the leaves 
in the woods would mean a considerable economy as to transport. 
An iron still will do for destillation, and if it was used with a helmet to hold back 
“ the impurities and heavy sesquiterpenes, it ought to be possible to ope without 
s- rectification, an oil iat would come up to all ee 
a Ses { 
s OU of Eucalyptus ‘Australiona: ‘Already some time ago, we = reported. on the oil of 
this eucalyptus aoe geseyed by RT. Baker and H. G. Smith’). In another penodica’, 
’ 
 — e ; | 
eee 4 The Indian Bobcat Recon ts h (1917), No.8; Perfum. ‘Record 8 (1917), 326. See also Handelsberichten — 
(Den Hoa) 11 (7), 472, — rat Journ. and Pyaeséd, ee Soc.,, N.S. W. 49 (1915), 514; Journ. chem. Soc. 110 
0939, 1. 566. | k 
4 
: dry. For another experiment the leaves of trees ten years ‘old were dried in the shade, ie 
