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There is hut one conclusion (and it is a disquieting one for the student who 
likes plain sailing with Australian timbers), and that is that in the Failford district, 
through local conditions, the quality of the Flooded Gum is superior to what it is in 
other parts of the State—so superior, in fact, that it is of better quality than that 
of the Blue Gum, with which it is associated. 
Messrs. Baker and Smith (“ Research on the Eucalypts,” p. 32) settle the 
Blue and Flooded Gum difficulty in the following words :— 
Eucalyptus sciliyna var. pallidivalvis, Nobis. 
It has been customary in the past to include under the species (E. saiigna ) two trees known 
vernacularly as “Blue” and “Flooded” Gum, respectively, but in this work the two are separated, the 
latter being placed as a variety [of the former under the varietal name of pallidivalvis. The timbers 
of the two are quite distinct, and are so sold in the trade. The fruits of the variety are very constant 
throughout the area of distribution, the exserted white valves and glaucous calyx being very characteristic, 
and it is against our better judgment, perhaps, that this Eucalyptus is not raised to specific rank. 
The localities of Blue Gam in the above work are given “mostly in or at the 
head of gullies in the coastal district of New South Wales; Queensland.” The 
localities of Flooded Gum are given from Gosford northward; with the isolated 
southern locality of Barber’s Creek, near Goulburn. 
I have spent much time in the field for many years in trying to arrive at 
botanical differences between Blue and Flooded Gum. I have long been aware of 
the glaucous appearance the fruits E. saiigna sometimes take on, but have not been 
able to associate it definitely with any special kind of tree. Messrs. Baker and 
Smith appear to have been more fortunate, and I can only commend the matter to 
consideration of my readers. 
1 1 
Exudation. — I have very rarely seen kino of this species, and it would 
appear to be very scarce ; in fact, settlers will tell you it yields none. I have only 
collected it in small quantities, and an old bushman “never knew it had any gum,” 
although he often cut it up for felloes. Mr. A. R. Crawford writes, “ except in the one 
instance mentioned in my first letter, I have never met with traces of exudation 
on this Eucalypt.” As seen by me, it is of a dullish colour, of all tints of garnet. 
It is of a horny texture for the most part; it readily dissolves in cold water, forming 
a quite clear liquid of a dark orange-brown colour, with a small amount of residue 
of a Yaudvke-brown colour.. Alcohol dissolves a portion of it, producing a tincture 
of an orange-brown colour. Analysis of a specimen procured near Sydney showed 
it to contain 35'5(5 per cent, of kino tannin, 4'6 per cent, of insoluble plilobaphenes, 
and 31'3 per cent, of gum. It is one of comparatively few Eucalyptus kinos which 
contain gum, and I have placed it in one of the three great groups into which I 
have divided Eucalyptus kinos, viz., the Gummy group. 
Size. —Up to 150 feet high and more, and a diameter of 3 or 4 feet, though 
exceptionally attaining a much greater size. 
