374 AUSTRALIAN NATIVE PLANTS. 
takes a good polish. It is brown and white in streaks, the brown 
being very hard. The stem yields :-— 
Charcoal... = Ma .-. 29 per cent. 
Crude wood vinegar... aie ga of 
Tar re “ae Hee aaa i 
Tannic acid Pac Nes ce eg sa 
Gallic acid ae bs axe OG 
(Mueller.) Diameter, 9 to 12in. Height, 30 to goft. 
All the colonies except South and Western Australia. 
73. Alsophila Leichhardtiana, 7.v.JZ,, (Syn., A. Macarthurii, 
F.v.M.); N.O., Filices, B.FI., vii., 711. 
“ Prickly Tree-fern,” called from the circumstance of the stalk being ' 
covered with sharp, black prickles. ‘* Yarrah-wah” of the aboriginals 
of Illawarra (New South Wales). 
Wood, or outer hard portion of stem, black with white streaks, 
the black portion being very hard. This description will apply to 
the stems of many tree-ferns. Useful for rustic-work. 
New South Wales and Queensland. 
74. Alstonia constricta, 7.v.1/., N.O., Apocynez, B.FI., iv., 
314. 
Called ‘‘ Fever-bark,” or ‘‘ Bitter-bark.” 
Wood of a pale yellow colour, close in the grain; warps in 
drying. (Cat. Queensland Woods, Col. and Ind. Exhib., 1886.) 
This tree is largely sacrificed for its medicinal bark, and the 
timber apparently goes to waste. Diameter, 6 to 15in. Height, . 
40 to 7oft. 
New South Wales and Queensland. 
75. Alstonia scholaris, #.2r., (Syn. A. cuneata, Wall.) ; N.O., 
Apocynee, B.F1., iv., 312. 
“Devil Tree” (of India). 
The light wood of this tree is used in Ceylon for making 
coffins. (Zreasury of Botany.) It obtained the specific name 
‘“‘scholaris” from the fact of its planks being used as school- 
boards when covered with sand for tracing letters. It is white and: 
