Select Plants for Industrial Culture and 



quality, but often of amber-color. This is the principal 'species 

 used for tanners' bark in South-Africa, where Leucospermum cono- 

 carpum (R. Br.) is also extensively employed for the same purpose 

 [McGribbon], though it imparts an unpleasant odor to the leather 

 made with it [McOwan]. 



Acacia implexa, Bentham. 



Victoria, New South Wales, Queensland, A tree of middle size, 

 content with poor soil. Wood firm and close, dark-brown with 

 yellowish stripes ; much in demand for turnery, cogwheels and 

 other purposes, which need tenacity and strength [Dickinson]. 

 Bark available for tanneries. 



Acacia K.oa, A. Gray. 



Hawaii ; there one of the most valuable of timber-trees. Stein 

 reaching a height of 60 feet, topped by wide-spreading phyllodi- 

 nous foliage. Wood easy to work, particularly in a fresh state ; 

 formerly much-used for boat-building and for building purposes 

 generally ; also suitable for cabinet-work. Species of Metrosideros, 

 some ascending to 8,000 feet, one over-topping all other trees, 

 furnish a large share of hard, tough and very durable timber in the 

 Hawaian islands. Their wood varies from a light red to a purplish 

 hue [Hon. Judge McCully]. 



Acacia leiophylla, Bentham.* (A saligna, Bentham nob Wendland.) 



South- Western Australia, where it is the principal tree chosen 

 for tanners' bark. It is a wide-spreading small tree, fit f or avenues ; 

 emitting suckers. The weeping habit fits it particularly also for 

 cemeteries. It comes into flower simultaneously with the Cherry- 

 tree, or somewhat later, and blooms profusely. The bark contains 

 nearly 30 per cent, of mimosa-tannin, and is extensively used by 

 tanners in West- Australia. Perfectly dried leaves y:eM from 7 to 

 8 per cent, mimosa-tannic acid, giving a lead-precipitate of a light 

 yellow-color ; the leaves contain also a considerable quantity of 

 sulphate of lime. The London price of fair West- Australian gum 

 from this species was from 46s. to 49s. per cwt. in 1879. The tree 

 has proved in Algeria to resist the sirocco better than most species 

 [Dr. Bonand]. A. cyanophylla (Lindley) is a closely allied species, 

 serving the same purposes. 



Acacia long-ifolia, Willdenow. 



South-Eastern Australia. This tree is introduced into this list, 

 inasmuch as the very bushy variety, known as A. Sophorae (R. 

 Brown), renders most important service in subduing loose coast- 

 sand, the lower branches striking root into the soil ; it should there- 

 fore be disseminated on extensively bare sand-shores in regions, 

 where no severe frosts occur. The bark of A. longifolia is only 

 half as good as that of A. mollissima for tan, and used chiefly for 

 sheep-skins. The tree is of quick growth. 



