2 SELECT PLANTS FOR INDUSTRIAL CULTURE 



foliage, and thus in Sind the lac is mainly yielded by this tree. 

 The stem attains a circumference of 10 feet. The astringent pods 

 are valuable for tanning, also the bark, which is known as "Baboot" 

 bark ; the wood, known as " Sunt," is very durable if water- 

 seasoned, extensively used for wheels, well-curbs, and many kinds 

 of implements, also for the knees and planks of boats. A. gummi- 

 fera (Willd.) and A. Ehrenbergiana (Hayne) are among the species 

 which yield gum-arabic in North Africa. A. latronum (Wildenow) 

 and A. modesta (Wallich) form thorny hedges in India (Brandis). 



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 unapproachable prickly 

 vegetation. 



Acacia binervata, De Candolle. 



Extra-tropic East Australia. A tree attaining a height of 40 feet. 

 The bark used by tanners, but not so rich as that of A. decurrens 

 (W. Dovegrove). 



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 Acacise, 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. 



