39 $ 
parison, the average results obtained in the analysis of other citro- 
nella oils of commerce. 
— 
Sample from Kellas 
Estate. 
Java oil. 
Ceylon oil. 
Specific gravity 
Refractive index 
Optical rotation in loo 
mm. tube- 
Solubility in So per cent, 
alcohol 
0.8948 at 15° C. ... 
1.4858 at 24° C. 
—i 34' at 24° C. ... 
1 in 1 or more vols 
of alcohol 
^ 0.892 
- o° 50' to 2 0 2 6'... 
1 in 1 or more vols 
of alcohol 
0.908 
-9° 36' 
tin 1 vol. becom- 
ing cloudy on 
further addition 
of alcohol 
Geraniol 
Citronellal (by difference) 
32.7 per cent. 
55-3 M 
31.91038.1 per cent. 
50.4 to 55.3 „ 
32.9 per cent. 
28.2 „ 
These results show that this sample of citronella oil from the 
K el la's Estate is of good quality, and that in composition it more 
nearly approximates to Java oil than to that produced in Ceylon. 
Commercial Valuation. 
A sample of the oil was submitted to a firm of commercial 
experts, who were also informed of the results of the chemical 
examination, for valuation. They reported that*the oil was very 
similar to samples of the same material previously received from 
Singapore and that it would be worth about 2j. per pound. On the 
same day Ceylon citronella oil was quoted at is. 6 \d. to is. id. 
per pound. 
PATCHOULI OIL. 
Description or Sample. 
The sample measured about four fluid ounces and was labelled 
‘ ■ Pure Patchouli Oil, distilled on the Kelfas Estate, 7th December, 
1904.’' The oil was of a dark lemon yellow colour and possessed 
the characteristic strong persistent odour of patchouli. 
Chemical Examination. 
The sample was examined in the Scientific and Technical Depart- 
ment of the Imperial Institute, and gave the results recorded in the 
following table, to which have been added the results given by 
other samples of commercial patchouli oil. 
_ 
Oil from Kellas 
Estate. 
Oil imported from 
Singapore. 
Oil distilled from 
Patchouli leaves 
in Germany. 
Specific gravity 
Optical rotation in 100 
1 
0-9525 
| 
0.957 to 0.965 
0.970 to 0.995 
mm. tube 
Refractive index 
—43° 31' 1 
1.5063 1 
— 44 0 to— 50° 
— 50° to —68° 
Solubility in 90 per cent. 
V ** | 
alcohol 
1 in 7.4 vols. 
1 in from 3 to 7 
I in 1 vol. 
i 
1 
vols. 
