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Aboriginal Ntlllie. —“ Parragilga,” of the aborigines of the Bellinger River, 
according to Mr. Forester Mecham; “ Thattinebark,” of those of the Hastings, 
according to Mr. Forester Brown, £; bark ” being the name for tree. 
Synonym. — E. tenninalis, Sieb. [E. fasciculosa, F.v.M., found in South 
Australia and also in the far west of New South Wales, is a White Gum, with 
reddish timber. Its flowers and fruits, however, resemble those of E. paniculaia a 
good deal, and it was for a number of years erroneously looked upon as a variety of 
that species.) 
Leaves. —This species is not an abundant yielder of oil, so that the ironbarks 
felled for timber are not likely to have their leafy tops utilised for distillation. 
Messrs. Baker and Smith (“ Research on the Eucalypts ”) report thus on 
the oil:— 
Species. 
Specific Gravity 
at 15° C. 
Specific Rotation. 
[a] 
D 
Saponification 
Number. 
Solubility 
in Alcohol. 
Constituents 
found. 
E. paniculata.. 
0-901 
+ 8-65° 
7-11 
1 vol. 80% 
Pinene, 
Eucalyptol, 
Alcohols, 
Sesquiterpene. 
In many Eucalypts the young growth of leaves (whether a young plant, or 
what is universally known in Australia as “ sucker ” growth) differs a good deal in 
appearance from the mature foliage. For example, to take perhaps the best known 
species, the young leaves of E. globulus are markedly different from the mature 
ones. This species may accordingly be termed dimorphic as regards its foliage. 
The term is only comparative, as all species present more or less dimorphism as 
regards those organs. 
In E. paniculaia, however, the dimorphism is not particularly marked—that 
is to say, there is not much difference between young and old foliage, the young 
foliage being more broadly lanceolate than the old. It would appear that those 
species with very dimorphic foliage are more archaic forms than the others. These 
forms have, in the course of ages, undergone much variation, as the result of 
environment, hybridism, and other causes. In other words, E. paniculata may, as 
compared with E. globulus, be a recent species, though I at once admit that the 
element of time is uncertain, since the forces which determine variation mav re-act 
irregularly to form different species. In other words, one form, theoretically of 
archaic type, may be a shorter period in the making than one less archaic in 
appearance. 
Fruit. —In referring to the plate, I have drawn attention to the fact that 
the fruit of this species varies in size. 
