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Acacia binervata, DC. 



The Two-veined Hickory. ' 



Botanical Name. — Binervata (Latinised adjective, from nervus, a nerve 

 or vein) denoting " two-nerved," in allusion to the two veins in the leaves 

 (phyllodia), a characteristic so readily recognised that every person can bear 

 it in mind. , 



Vernacular Names. — In the lUawarra district, where this Wattle is par- 

 ticularly abundant, and attains its greatest luxuriance, it usually goes under 

 the name of " Black Wattle " ; but, to save confusion, it would appear 

 desirable to restrict the use of this term as far as possible to the forms of 

 Acacia decurrens. 



It shares with other broad " leaved " Wattles the name of " Hickory," and 

 in order to distinguish it, the name " Two-veined Hickory " is proposed. 



Ahoriginal Name. — "Myimbarr," of the aborigines of lUawarra (New 

 South Wales). 



Leaves. — Note the two well-marked veins on the phyllodes (leaves) of this 

 species. 



Barh. — ^It yields a valuable bark; specimens from Cambewarra, N.S.W., 

 yielded me up to 58- 03 per cent, of extract, and 30- 04 per cent, of tannic 

 acid. The colour of this sample was dark brown ; the inner bark warm red- 

 brown; the outer bark deeply-fissured or flaky, which makes it more or less 

 pulverulent; the inner bark contains abundance of strong fibre; diameter, 

 12 inches; height, 20 to 25 feet; locally called "Black Wattle." 



A second sample from the same locality gave 28-2 per cent, of tannic acid, 

 and yielded 51-5 per cent, of extract. 



I examined a specimen from Tomerong, near Jervis Bay, N.S.W. (between 

 Nowra and Milton), which was collected February, 1888, and analysed the 

 following September. As received, it had had its first crushing in the mill; 

 nevertheless it was possible to pick samples showing a fair proportion of 

 inner and outer bark. The outer bark is somewhat scaly, and the inner 

 bark is light reddish-brown and very fibrous. It cannot be mistaken for 

 A. decurrens bark owing to its fibrous nature. It gave tannic acid 19-3 per 

 cent.; extract, 37-8 per cent. 



This sample was taken from bulk actually used by a tanner, and it will 

 be found, in general, that barks containing 20 per cent, of tannic acid are 

 commonly used by country tanners; in fact, if bark of a species gives as 

 high as 15 per cent, of tannic acid, it is worthy of inquiry whether richer 

 specimens are available. 



The above are southern localities ; following are from northern : — 



Bark from Booral, county of Gloucester, stripped in July, and analysed 

 in August, gave 28 per cent, of tannic acid, and 51-55 per cent, of extract. 

 It was from a tree 30 feet high, and 8 inches in diameter. 



A further sample from Stroud (in the same neighbourhood) collected in 

 January, gave 27-73 per cent, of tannic acid, and 48-9 per cent, of extract. 



This tree is frequently a large tree, and yields much bark. 



Timler. — The wood is close-grained, tough, and light, and much prized 

 for axe-helves and bullock -yokes. As regards colour, it varies between a 

 dirty white and pinkish and a uniform dirty colour, similar, but more 



