ON SOME N.S.W. TAN-SUBSTANCES. 91 



Extract. — Dissolves in water at 100° C. to the extent of 30-35 

 per cent. Solution becomes turbid on cooling. 



Catechu-tannic acid — 18*93 per cent. 



Notes. — The only allusions to analyses of this bark that I can 

 find are, " The bark of A. longifolia is only half as good as that of 

 A. decurrens." (Mueller.) 



" It yields 12*67 per cent, of tannin." (Catalogue of Queensland 

 Timbers, Colonial and Indian Exhibition, 1886). 



The much-branching variety Sophorce ( = A. Sopliorw, Labill.) 

 is frequently found on the coast and is very useful for binding 

 sea sand. A convenient Sydney locality for good specimens is 

 Lady Robinson's Beach. 



26. Acacia glaucescens, Willd., N.O. Leguminosse, B. Fl. ii., 406. 

 Found in New South Wales and Queensland, and recently 



in Victoria. 

 Yernacular Name — " Myall," (this name is of course shared 



by other species). 

 Locality whence this particular specimen was obtained — - 



Quiedong, near Bombala, N.S.W. 

 Geological Formation — Limestone. 

 Part of the Tree Examined — Bark. 

 Particulars of the trees whence it was obtained — Height 20 



to 25 feet, diameter 6 to 12 inches. 

 Collected 8th April, 1887. Analysed 5th to 23rd July, 1887. 



A deeply fissured bark of a dark grey colour. Inner bark bright 

 reddish-brown. Contains abundance of a light coloured tough 

 bast, which would serve excellently as a coarse tying material for 

 local use. Average thickness J inch. Powder very like that of 

 A. rig ens, but a little brighter in colour (perhaps accounted for 

 by its more recent collection). 



Extract.— Soluble in water at 100° C. to the extent of 14*29 

 per cent. 



Catechu-tannic acid — 8*10 per cent. 



27. Acacia dealbata, Link., B. Fl. ii., 415. A. dealbata, Link, 



Baron Mueller's Census, p. 47. A. decurrens, Willd., var. 



dealbata, F.v.M., Mueller's " Select Extra-tropical Plants," 



N.S.W. Edition. 



Found in all the colonies except Western Australia. A. 



dealbata having recently been found in Queensland, it 



