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The African Rubber Industry Conlinued Botany LifeHistory and Structure Distribution Climate Soils Map Other Species of Funtumia Cultivation
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acetic acid appear average girth average yield bark Benin City blades Botanic Gardens branches cacao cambium canker Castilloa cent coagulation collected colony colour Congo considerable D. H. S. system difﬁcult diﬂicult dilution disease districts dry rubber elastica excision experiments exported ﬁg ﬁgures ﬁnd ﬁrst ﬁve ﬂow ﬂowers ﬂuid foliage forest trees formalin fresh latex fruits Funtumia elastica Funtumia latex Funtumia trees Gold Coast groover growth half spiral height Hevea incision insects Kameruns Kickxia Landolphia large number laticiferous latifolia leaves less lines long Mabira forest mercuric chloride method months native number of trees obtained opening cuts owing paring pints plantation plants pricker quantity rainfall roots rubber trees seed soil Southern Nigeria species spiral system stem sufﬁcient suﬂicient surface tannic acid tapper tapping thin tion tissue trunk tubes Uganda vertical channel Victoria vines West Africa whilst yield per tree young trees