WATTLES AND WATTLE-BARKS. 45 



sample of a black bark, stained, leopard-like, with whity-green patches, and 

 bearing lichens, yielded the writer 18 '03 per cent, of taniiic acid, and 42*35 

 per cent, of extract. It was from Penrith, N.S.W. 



A sample from Penshurst, Illawarra line, near Sydney, gave the author 

 (Proc. R.S., N.S.W., 1888, p. 209) 39'98 per cent, of extract, and 14'42 of 

 tannic acid. Height of tree, 10 to 15 feet ; diameter, 1^ to 2 inches ; 

 collected September, 1887 ; analysed August, 1838. Alight-coloured bark, 

 very thin, of the thickness of stout brown paper, and reminding one strongly 

 of that of A. longifolia. 



A very promising-looking bark obtained from the same locality in February 

 and analysed the same month, gave 19' 75 per cent, of taniiic acid, and 4G'95 

 per cent, of extract. It is fairly thick, pale in colour, has little fibre, 

 and its low percentage of tannic acid is certainly disappointing. I doubt 

 whether a finer sample of this bark is obtainable ; if this surmise is correct, 

 the value of this bark is fixed at under 20 per cent, of tannic acid. 



A specimen from trees 15 to 20 feet high, and having a diameter of from 4 

 to 8 inches, was collected in February, 1890, at Krackenback Mountain, 

 Jindabyne, N.S.W., and analysed January, 1891. It was found to contain 

 11 per cent, taunic acid, and 29'75 per cent, extract. This bark is deceptive 

 in appearance, being smooth, breaking short, with little fibre, and altogether 

 a fair-looking bark. 



Found in Victoria, New South Wales, and Queensland. On the Snowy 

 Mountains it occurs at elevations from 4,000 to 5,000 feet. It is an eastern 

 spscies, found principally in the coast districts. 



19. Acacia brachybotrya, Benth., B.EL, ii, 373. 



A "BLUE BUSH." 



Two samples of this bark were forwarded to the Museum by Mr. A. L. 

 Thrupp, Balhannah, S.A., with the intimation that it is used in the adulte- 

 ration of golden wattle bark (Acacia pycnanthd) in South Australia. 



The bark had been chopped, and from its general appearance it certainly 

 would be somewhat difficult to detect when mixed with some samples of Acacia 

 pycnantha bark. "With the better samples of Acacia pycnantha the detection 

 of admixture should not be difficult. 



The barks are thin, inclined to be scaly, are somewhat fibrous, and of a 

 reddish colour. They were stripped and analysed August, 1890, one with the 

 result of 21'1 per cent, tannic acid, and 47'3 per cent, extract ; the other 

 gave 18 per cent, tannic acid, and 46*15 per cent, extract. 



