FORESTRy; OF WEST AFRICA. 345 



annually. Gum-arabic is largely used in medicine, 

 in the arts for giving lustre to crape and silks, for 

 thickening colours and mordants in calico-printing, in 

 the manufacture of blacking, &c. — ' Medicinal Plants,' 

 Bentley and Trimen, vol. ii., No. 94, &c. 



Distribution : Senegal, Upper Nile, South Nubia, 

 Atbara, Kordofan. 



Acacia etbaica, Schweinf- — Slender tree, attaining 

 twenty to thirty feet. This species is said by Dr. 

 Schweinfurth to afford an excellent gum-arabic. — 

 ' Flora of Tropical Africa,' Oliver, vol. ii., p. 349. 



Distribution : Nile Land, Lower Guinea. 



Acacia Farnesiana, Willd. — Shrub or low tree, 

 largely cultivated on the perfume farms of the South 

 of France, and frequently throughout the Tropics, for 

 the perfume obtained from the flowers and known as 

 Cassia. — 'Guide to Museums,' Kew, 1883, p. 54, &c. 



Distribution : Not indigenous in Tropical Africa, 

 unless in Angola, Cape de Verd Islands. 



Acacia Seyal, Delile. — Small or medium-sized tree. 

 The Nile variety of this plant, named Fistula, together 

 with A. stenocarpa, Hochst, yield an inferior kind of 

 gum-arabic known in commerce as Suakim, Talca or 

 Talka gum. — ' Medicinal Plants,' Bentley and Trimen, 

 vol. ii.. No. 94. 



Distribution : Upper Guinea, North Central, Nile 

 Land, Mozambique District. 



