WATTLES AND WATTLE-BARKS. 53 



38. Acacia Cunningliamii, Hook., B.EL, ii, 407. 



"BLACK WATTLE," "BASTARD MYALL" of Northern New South Wales. 

 " KOWARKUL " of the Queensland aboriginals. 



A specimen of this bark received from Dr. T. L. Bancroft, of Brisbane, 

 and obtained from Deception Bay, gave 12'32 per cent, of tannic acid 

 and 26'95 per cent, of extract. It is known locally as " Black Wattle." 

 It was from a tree 30 feet in height and 1 foot in diameter, stripped in 

 May, analysed in July. Dr. Bancroft says, " This is the only tanning 

 wattle which grows near Brisbane in any great abundance." 



The inner bark consists largely of fibre, while the outer is furrowed and 

 scaly, of a dark-brown colour ; the thickness of the bark analysed averaged 

 | inch under the outer scaly portion. The colour is dark-reddish brown,, 

 and altogether it looks a poor tan bark. As a rule this tree carries a heavyish 

 bark. 



Following is an analysis of another Queensland sample of this bark : 

 Tannin, 9'13 per cent. ; extract, 16*15 per cent. (Queensland Comm., CcL 

 and Indian Exli., 1886.) 



Central New South Wales to Central Queensland, 



39. Acacia leptocarpa, A, Cunn., B.EL, ii, 407. 



The following is an analysis of this bark: Tannin, 10'20 per cent.; 

 extract, 26'41 per cent. (Staiger.) 



Queensland. 



40. Acacia polystachya, A. Cunn., B.FL, ii, 407. 



This bark contains 7'59 per cent, of tannin. (Staiger.) 

 Queensland and Northern Australia. 



41. Acacia aulacocarpa, A. Cunn., 13. EL, ii, 410. 



< 'HICKORY WATTLE." (Bailey.) "Dilka" of the Port Curtis blacks. (Hedley.) 



This tree yields a tan-bark, used in Queensland to some extent. A 

 specimen received from Dr. T. L. Bancroft, who obtained it from Deception 

 Bay, near Brisbane, gave 7*34 per cent, of taunic acid, and 13'9 per cent, 

 of extract. Height of tree 30 fest ; diameter, 1 foot, stripped in May, analysed 

 in July. Locally, it is a very common species. 



The bark analysed had an average thickness of f inch. ; the interior 

 consists largely of yellowish fibre, while the exterior is greyish, deeply 



