OILS. 265 
way of a change, /. amygdalina, for the two things seemed 
exactly the same. They had had one sample of Z£. dumosa oil, 
which was vastly superior, and they had tried to get it again and 
again, but had never succeeded in getting a similar oil. The 
various Eucalyptus oils were of great interest to the soap-maker. 
£. citriodora oil was a very interesting substance, and might, if 
worked into soap, give the public very great satisfaction, inasmuch 
as the odour appeared to be pleasanter than lemon-grass, and not 
so sickly as that of citronelle. All the odours the various Eucalypti 
were capable of assuming had the peculiar property common to 
camphoraceous odours, and no doubt the soap-maker would be 
able to utilize them largely. 
Oil of Lucalyptus amygdalina. 
Table (1). 
Specific Refractive Index. 
Ce a __| Rotation. 
15°5°C. | 
Temp. A D H 
8812 £3.50 1.4717 1.4788 1.5021 | —136° 
These determinations were made by Dr. Gladstone. The 
rotatory power was determined for a column of liquid 10 inches 
long. 
Table (2). 
Specific | Boiling| Refractive|Dispersion| Sensi- | Specific 
gravity at | Point. | Index A | at 20° C. | tiveness. | Refractive; Rotation. 
ea: C. at 20° C. Energy. 
8642 ie T.4090 | 10323 49 5434 |—142° 
(Gladstone, wide Watts’ Dict., iv., 186.) 
South Australia, Tasmania, South and East Victoria, coastal 
districts of New South Wales (not extending far to either west or 
north). 
