430 
Morris, Journ. Soc. Arts, xlvi. 1898, f. 14; Schlechter, West 
Afr. Kautsch. Exp. p. 128, p. 9 (L. Heudelotii); De Wildeman 
and Gentil, Lianes, Congo, tt. 1-2 and 21, ff. 5-8 (seedlings) ; 
e Wildeman, Mission E. Laurent. t. 152 (leaves showing vein- 
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pson, Col. Rep. Mise. No. 66, 
1910, t. 22; Bull. Agric. Congo Belge, ii. 1911, p. 226, f. 117, 
p- 300, f. 157 (9 ans), p. 301 f. 158 (9 ans) and p. 306, £. 161. 
Vernac. _names,—{Ottafrifredi (Ibo); Ubamiogon (Benin 
Thompson)]; Ibo Tabong (Mamu, Foster, Yoruba, T hompson) 
Uboikwankwan, Ugbo (Ugara, Benin, Unwin); Arobo (Bassa, 
iei Coast, Johnson); Krepi (Volta R. Gold Coast, Dudgeon) ; 
yielding the ‘‘ white rubber," ** Pempene rubber" and ‘“‘ Krepi 
ball”? of the Gold Coast, and also believed to be the source of the 
‘‘ Nigger ball ” of Sierra Leone, ‘‘ Rio Nunez Niggers,” ‘‘ Accra. 
Niggers,” ‘Conakry Niggers,” ‘‘Addah N iggers,” **Congo Red,” 
—Thimble Rubber. “‘ Jandunko (Cluster) ’? Rubber, the value of 
which may vary from about Is. 6d. to 2s. 6d. per Ib. 
The rubber is collected by making rough cuts in the bark with 
a machete, a little lime-juice is poured on the exuding latex 
which soon coagulates and may then be collected and rolled off in 
a ball. A dozen or more vines may be cut and treated with lime- 
juice bef inning to collect. In many localities, however 
mentioned (Col. Rep. Misc. No. 51, 1908, p- 37; Gambia Govt. 
Gaz. 24th Aug. 1907, p. 284) as being sometimes used by the 
natives for coagulating the latex. The rubber from the dry bark 
may also be extracted by machinery. The yield from a large vine 
has been given at from 1-2 of a Ib. annually (Thompson, Col. 
) 
