8 
Swamp Mahogany (Angophora species). — Native name, 
Boolerchu. This timber grows on poor, wet, or swampy land. 
It attains to a good size. It resists the cobra longer than any 
other so far as yet known. When cut up into boards or planks 
it cracks and twists into all manner of ways. Were it possible 
to keep it constantly wet after being cut, and till fastened into 
its place, it might prove very useful for sheathing vessels or for 
protecting the banks of rivers, as, for instance, at Mackay. Mr. 
John Petrie informs me that some of this timber is to be found 
that does not crack and warp in the manner herein described, 
about seven miles from Cleveland. 
Stringy Bark (Eucalyptus fibrosa). — This tree grows on 
sandstone of the coal measures, and on the Brisbane slate. It 
is used for rails in fencing, not being readily liable to take fire. 
It makes the best charcoal. 
The bark of the four preceding trees is rough, loose, and 
persistent. On the Blackbutt the bark is persistent on the 
trunk but deciduous on the branches. 
Ironbark (Eucalyptus Siderophloia).— There are two sorts 
of this timber, one gray coloured, native name, Tanderoo ; the 
other dark-red, native name, Biggera. The Biggera has got a 
thick ridgy bark, grows in patches on ridges. The tanderoo 
grows more on flats and sides of scrubs, has a thinner bark, 
burns much more readily, is not so pipey, and not so readily 
eaten by the white ants as the Biggera. It is also a tougher 
timber. These trees grow in a great variety of soils. Twenty- 
five years ago immense numbers grew in the parishes of Woo- 
garoo and Goodna, on the sandstone, in the coal measures ; also 
on the Brisbane slate, on the north side of Enoggera Creek, 
Waterworks road. It is used extensively for piles, beams, and 
planking of wharves and bridges. In house building it is used 
for beams, joists, studs, and shingles. By wheelwrights for 
naves and spokes. By shipwrights for beams, keels, and planks, 
and for sleepers on railways. It is also used for fencing posts 
and rails. The tree suffers from bush fires, and the white ants 
eat it. 
Bloodwood (Eucalyptus corymbosa). — Native name, Boona. 
This tree grows in a greater variety of soils and places than any 
other tree or plant that I know of. It is to be found on the 
richest soils and in the poorest, in swamps and on the tops of 
ridges. In rich soils the timber is nearly worthless, as it is full 
of gum veins or rings. The good sound trees are on poor soil. 
The timber is very durable on the ground or in the ground. 
A piece can be pointed out at the North Pine Biver that was 
cut into by a cross-cut saw and an axe in the year 1825. It is 
used for posts in fencing. It does not readily take fire ; neither 
is it soon attacked by white ants. Eor posts for building, and 
using the whole log, this timber is superseded by none for 
durability that I know of. 
