458 FOREST CULTURE AND 
to Mr. O’Shanesy, brown, hard, heavy, and elastic; 
used by the natives for spears. 
Acacia horrida, Willdenow. —The Doornboom or 
Karra Doorn of South Africa. A formidable hedge- 
bush, with thorns three inches long, readily available 
for impenetrable hedge-copses. It exudes also a good 
‘kind of gum. So A. Giraffee (Burchell). 
Acacia lophantha, Willdenow. —South West Aus- 
tralia. One of the most rapidly - growing trees for 
copses and first temporary shelter in exposed iocali- 
ties, but never attaining to the size of a real tree. It 
produces seeds abundantly, which germinate most 
easily. For the most desolate places, especially in 
desert tracts, it is of great importance to create quick- 
ly shade, shelter, and copious vegetation. Cattle 
browse on the leaves. The bark contains only about 
8 per cent. mimosa tannin ; but Mr. Rummel found 
in the dry root about 10 per cent. of saponin, valua- 
ble in silk and woo! factories. 
Acacia pendula, All, Cunningham. — New South 
Wales and Queensiand. Generally in marshy tracts 
of the interior. One of the Myali trees. 
Acacia pycnantha, Bentham.*— Victoria and South 
Australia. Though frequent in many parts of our col- 
ony, this tree, known as the Golden Wattle, deserves 
even here extensive cultivation, mainly for the sake 
of its bark, rich in tannin. Itis of rapid growth, will 
succeed even in sandy tracts, and yields seeds copi- 
ously, which germinate with the greatest ease. It is 
never a large tree. By improved methods the fra- 
grant oil of the flowers could doubtless be fixed, though 
its isolation might be difficult and unremunerative. 
Experiments in the writer’s laboratory have shown 
