THE TIMBERS OF COMMERCE 



the Cloncurry River. Gidgee in Queensland (5). Yarran in 

 New South Wales (20). Gidia (12). Spear-wood (85). 



Sources of Supply. Queensland, New South Wales, South 

 Australia, Victoria. United States (introduced). 



Physical Characters, etc. Recorded dry- weight 66 to 76! Ibs. 

 per cu. ft. Hardness Grade i, compare Ebony. Burns in- 

 differently well with a short, crackling flame and a little aroma : 

 heat expels a juice : embers glow in still air. Smell fragrant, 

 like violets, more so when worked. Solution feeble, dirty-brown. 



Grain. Very fine, even and dense, exceptionally sinuous, pro- 

 duces a beautiful figure. Splits with a short-waved fracture. 

 Surface lustrous. 



Bark. ? 



Uses, etc. As those of A. pendula, from which it is difficult to 

 distinguish. " A small tree " (5). My specimen must have 

 been cut from a tree not less than 8 inches in diameter. 



Authorities. F. M. Bailey (5), p. 53. Nilsson (854), p. .23. 

 Wiesner (131), L. 6, p. 82. Col. Cardrew (20). 



Colour. Heart-wood, dark, rich, reddish-brown, sharply 

 defined from the yellow sap-wood. 



Anatomical Characters. As those of A. pendula No. 68. (See 

 this.) Transverse section : 



Pores. Clearly visible but not prominent, occasionally in 

 groups of as many as 8 pores. 



Rays. Need lens, and then not readily visible. 



Rings. The white lines sometimes succeed each other 

 within the Radial diameter of a single pore. 



Radial Section. Pores, obscure, dark grooves filled with gum, 

 appear hoary in the darker wood, very sinuous. Rings doubtful : 

 the darker zones appear to limit the year's growth. 



Tangential Section. As the Radial, but the soft-tissue appears 

 as sinuous, hoary borders to the pores. 



Type specimen authenticated by F. M. Bailey. 



No. 70. BRIGALOW. Acacia harpophylla. 

 F. von M. 



PLATE V. FIG. 43. 



Natural Order. Leguminoseae. 



Sources of Supply. Queensland. 



Physical Characters, etc. Recorded dry-weight 75^ Ibs. per 

 cu. ft. Hardness Grade i, compare Ebony. Smell like that of 

 violets, very sweet. Taste none. Burns moderately well with 

 considerable crackling : no juice expelled by heat : embers glow 

 in still air. Solution, olive, turning brandy colour upon the 

 addition of potash : a copious brown ppt. 



80 



