510 AUSTRALIAN NATIVE PLANTS. 
young. I have planted most of the New South Wales Eucalypts ; 
many of them, however, are too tender for this climate when 
young, five or six degrees of frost killing them off, Z. restnifera is 
an exception.’”’ It is, however, possible that HZ. s¢derophlota may 
be alluded to. Diameter, 20 to 30in.; height, 80 to 12oft. 
New South Wales and Queensland. 
314. Eucalyptus robusta, Smth, (Syn. Z£. rostrata, Cay. non 
Schlecht.) ; N.O., Myrtacez, B.FI., iii., 228. 
This tree is known as ‘“ White,” or “Swamp Mahogany,” from the 
fact that it generally grows in swampy ground. It is also called ‘“‘ Brown 
Gum.” Aboriginal names are as follows:—‘' Dadangba,” Queensland 
(according to Leichhardt) ; ‘‘ Gnorpin,”’ ‘‘ Kimbarra,” Queensland; “Gunn- 
ung,” Richmond River (New South Wales). 
This timber is much valued for shingles, wheelwrights’ work, 
ship-building, and building purposes generally. As a timber for 
fuel, and where no great strength is required, this species is 
excellent, especially when we consider its adaptability to stagnant, 
swampy, or marshy places. It is reddish, difficult to split, and 
rather brittle ; is much used for round and square posts, joists, 
and sleepers, and is remarkable for its freedom from destructive 
insects, ascribable to the presence of kino-red. The specific 
gravity of air-dried wood is 1.098; absolutely dry, .889. Analysis 
gave 19 per cent. of kino-red. This is the largest percentage of 
kino-red hitherto observed in any wood, £2. rostrata and L. mar- 
ginata ranking next with from 16 to 17 per cent. How far the 
presence of a greater or lesser quantity of this substance in 
Eucalyptus timber affects its durability remains to be proved ; 
certainly its predominance in the most lasting woods seems to point 
out its being the main factor in this respect. (Mueller.) Vide 
Prof. Abel’s report on the wood of Z£. marginata,p. 484. Dr. Woolls 
speaks of the usefulness of this wood for mallets, rough 
furniture, and inside work, but states that it is not considered 
durable. A slab in the Technological Museum, which has been 
seasoned over twenty-five years (having been exhibited at the 
London International Exhibition of 1862), has a weight which 
‘corresponds to 58lb. goz. per cubic foot. 
