MYKTACE^E 369
OIL OF EUCALYPTUS SALUBEIS.This oil has the following values :—
Specific gravity ......... 0-902
Optical rotation - 5*8°
Refractive index 1-4841 at 16
*
Yield 1*4 percent*
It contains d-pinene, cymene, eucalyptol (10 per cent.), geranyl
acetate, and aromadendral.OIL OF EUCALYPTUS SANTALIFOLIA.This tree is a Tasmanian eucalypt. Its oil contains pinene, limo-
nene, eucalyptol, and sesquiterpenes ; it has the following characters :—
Specific gravity 0-884
Optical rotation - 37-7°
Refractive index 1-4736 at 20°
Eucalyptol 12 per cent.,
Yield 0-41 „OIL OF EUCALYPTUS SIDEBOPHLOIA.This tree is a " Eed Iron-bark" of Queensland. Its oil has ther
fojlowing characters:—
Specific gravity.. 0-9067
Optical rotation + 14-4°
Refractive index 1-5000 at 16°
Yield 0-056 per cent.It contains phellandrene, pinene, and eucalyptol.OIL OF EUCALYPTUS SIDBROXYLON.
This tree is the "Eed Flowering Iron-bark" of New South Wales
and Victoria. Its oil has the following characters :—
Specific gravity 0*919 to 0-923
Optical rotation + 1-35° „ + 3-1°
Refractive index 1-4725 at 16°
It contains about 60 per cent, of eucalyptol, pinene, a sesquiterpene,
and an aldehyde.
OIL OF EUCALYPTUS SMITHII.This oil is of very great importance, since it is perhaps the best
eucalyptol-pinene oil obtainable from any species. H. G. Smith gives
the following information in regard to this tree (which has been named
after him):—
The time is rapidly approaching when it will be considered advisable,
and found to be profitable, to cultivate or re-afforest with the best species
for the required kinds of essential oils obtainable from the members of
this great genus. The time seems opportune, therefore, to direct atten-
tion to the advantages which Eucalyptus Smithii offers for cultivation.
The growth of Eucalyptus Smithii, under natural conditions of soil
and climate, is considerable, and is more rapid with the so-called
" suckers," or new growths, which spring from the stumps of the felled
VOL. i. 24