90 ON SOME N.S.W. TAN-SUBSTANCES. 



24. Acacia binervata, DC, N.O. Leguminosse, B. Fl. ii., 390. 

 Found in New South Wales and Queensland. 

 Vernacular Name — " Black Wattle." 



Locality whence this particular specimen was obtained — 

 Cambewarra, (between MossValeand Shoalhaven)N.S. W. 

 Geological Formation — Sandstone. 

 Part of the Tree Examined— Bark. 

 Particulars of the trees whence it was obtained — Height 25 



to 30 feet, diameter 1 foot. 

 Collected 10th August, 1886. Analysed 12th to 23rd July, 

 1887. 

 Colour of bark dark brown to black, but apparently deepened 

 in tint through a bush fire having affected it slightly at some 

 remote period. Inner bark warm red-brown. Outer bark deeply 

 fissured or flaky, (usually the latter, which makes it more or less 

 pulverulent). Inner bark contains abundance of strong fibre. 

 The bark becomes exceedingly hard when dry. Average thickness 

 J inch. 



Extract. — Dissolves in water at 100° C. to the extent of 58*03' 

 per cent. 



Catechu-tannic acid — 30*4 per cent. 



Note. — " Bark not so rich as that of A. decurrens" (W. 

 Dovegrove, quoted by Baron Mueller). Nevertheless it is a most 

 valuable bark, and presses A. decurrens hard for the premier 

 position in point of yield of tannin. 



25. Acacia longifolia, Willd., N.O. LeguminosaB, B. Fl. ii., 397. 

 Found in all the Colonies except Western Australia. 

 Vernacular Name — " Golden Wattle." 

 Locality whence this particular specimen was obtained — ■ 



Cambewarra, (between Moss Vale and Shoalhaven) N . S. W. 

 Geological Formation — Sandstone. 

 Part of the Tree Examined — Bark. 

 Particulars of the trees whence it was obtained — Height 12 



to 15 feet, diameter 4 to 6 inches. 

 Collected 20th August, 1886. Analysed 13th to 23rd July, 



1887. 



Colour of bark varies from a dark grey (with light grey or 

 whitish patches) to dirty brown or nearly black. Usually almost 

 smooth, but those portions of the bark deepest in colour are 

 generally more or less furrowed, though never deeply so. Thickness 

 from one-sixteenth of an inch to one line. Full of fibre of an 

 average tenacity (for Acacias). Inner bark warm brown. 



