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Species Statistics Consumption Production
Gums and Resins in Ceylon 1112
Sources of Commercial EubberSummary of Dr Morriss
acid acre Africa Amazon amount appears Assam bark Borneo Botanic Gardens branches Brazil caoutchouc Castilloa Castilloa elastica cent Ceylon circumference clay climate coagulated collected collectors colour commercial copaiba cost creeper crop cups diameter districts dried estates experiments exported extract exudes Ficus elastica flow forest germination girth ground growth gutta guttapercha heat height Henaratgoda Hevea brasiliensis inches incisions India India-rubber juice Kickxia land Landolphia latex laticiferous leaves Madagascar Manihot Glaziovii method milk mould native Nicaragua obtained Peradeniya Perak percha plantation planters pound prepared produced profit propagation quantity resin river roots Royal Botanic Gardens rubber cultivation rubber plants rubber trees rubber-yielding sample season seed seedlings sent Singapore soil species specimens stem substance supply tapping thick trees growing Trimen tropical trunk vessels wood yield young plants