TIMBERS. 517 
works in Australia, and in England it is employed in the mercan- 
tile navy for beams, keelsons, and in many ways in the construction 
of ships, especially below the line of flotation, where a heavy 
material is not considered objectionable. For civil architecture, 
the ornamental and domestic arts, it is not, however, likely to be 
in much request, its extreme hardness and great weight precluding 
it from general use.” 
Following are specimens of this timber in the Technological 
- Museum: 1. No. 4, London Cat., 1862; 137, Paris Cat., 
1855. ‘‘Broad-leaved Rough Ironbark ” and “Terri-barri,”” names 
in Cumberland and Camden. Diameter, 24 to 48in.; height, 80 
to 1zoft. ‘From Appin, common in Cumberland; one of the 
strongest and most durable of timbers.’”’ The Parcs Cat. also 
states: ‘‘ Rough-leaved, rough-barked Ironbark.” ‘‘ This tree has 
been proposed as their emblem by the colonists of New South 
Wales.” Of a very dark red colour, very good to work, and even 
? 
in grain. 2. ‘‘ Ironbark of the Clarence;’ ‘“ Algerega’’ of the 
aboriginals. ‘‘This well-known tree attains a very large size in 
the northern districts—upwards of 1ooft. in height, and as much 
as 5ft. in diameter. Timber very highly valued for its unequalled 
strength and durability ; it is used for all kinds of fencing, shingles, 
beams, dray poles, plough beams, and various other purposes ; 
when properly seasoned it will not shrink.” (Cat. London Exh., 
1862.) Itis of a dark brown colour, heavy, hard, and close in 
the grain. 3. The wood described in the Sydney Mint Experi- 
ments, 1860, as “ Rough-barked Ironbark, Z. res¢nzfera,” is L. 
siderophloia. It came from Brisbane, and “is much prized for 
building and other purposes.” Specific gravity, 1.15; value of 
E, 639,400; of S, 2962. It has a wavy grain, and is of a dark 
reddish-brown colour. It is tough, hard to work, and well adapted 
for the felloes of wheels of drays and carts of all sorts. It lasts 
well for piles in water and for posts. It is very heavy. 
Specimens of this timber from New South Wales were 
examined by Mr. F. A. Campbell (Proc. R.S., Victoria, 1879), as 
regards their tensile strength. His figures are 21,000 and 26,50olb. 
“per square inch, “The grain is not at all uniform, being much 
twisted in parts.” 
