2 SELECT PLANTS FOR INDUSTRIAL CULTURE 



Acacia armata, R. Brown. 



Extra- tropical Australia. The Kangaroo Thorn. Much grown 

 for hedges, though less manageable than various other hedge 

 plants. Important for covering coast sand with an unap- 

 proachable prickly vegetation. 



Acacia Catechu, Willdenow. 



India, Africa, up to 3,000 feet. Tree of 40 feet height. The 

 extract prepared from the bark and heartwood is the catechu 

 of medicine or cutch of tannery. Pure cutch is worth about 

 25 per ton ; 4 tons of bark will produce 1 ton of cutch or 

 terra japonica. A. Suma (Kurz) is closely allied. 



Acacia Cavenia, Hooker and Arnott. 



The Espino of the present inhabitants of Chili, the Cavan of 

 the former population. A small tree with exceedingly hard 

 wood, resisting underground moisture. The plant is well 

 adapted for hedges. The pods, called Quirinca, serve as cattle 

 food (Dr. Philippi) . The husks contain 32 per cent, tannin 

 (Sievers), valuable as a dye material. 



Acacia Cebil, Grisebach. 



La Plata States. This is one of the most useful of all trees there, 

 on account of its bark, which is exceedingly rich in tannic acid ; 

 well worthy of introduction here ; also as an ornamental tree. 

 Numerous other Acacia), particularly the Australian species, 

 deserve yet tests for tannin. 



Acacia concinna, Candolle. 



India. Praised by Dr. Cleghorn as a valuable hedge shrub. 

 The pod contains saponin. So is likewise A. latronum 

 (Willd.), a hedge bush. 



Acacia decurrens. Willdenow, var. mollissima.* (A. moUissima, 

 Willd.) 



The Black Wattle. From the eastern part of South Australia, 

 through Victoria and New South Wales, to the southern part of 

 Queensland; in open plains a small or middle-sized tree, in 

 deep forest recesses a lofty tree of singularly rapid growth. 

 Its wood can be used for staves and many other purposes, and 

 it supplies an excellent firewood, but a chief use would be to 

 afford the first shelter, in treeless localities, for raising forests. 

 Its bark, rich in tannin, and its gum, not dissimilar to gum- 

 arabic, render this tree highly important. The English price 

 of the bark ranges generally from 8 to 11. In Melbourne 



