41 



or Ule in Mexico, (Castilloa Elastica) Mangabeira rubber 

 (Hancomia speciosa) and recently from Mexico "Guayule" 

 — (Parthenium argentatum). The following genera also 

 produce valuable rubber which is probably mixed with 

 Para — Mierandra, Bapimm, and Forsteronia. 



The South American export of rubber for the last 

 fiscal year is said to be 36,000 tons (of this 7,500 tons is 

 Caucho ball), by way of Brazil, and about 5000 tons from 

 Mexico, most of which is said to be "Guayule" and one- 

 fourth is exported to Europe (principally Germany) and 

 the remainder to the United States. 



In Africa the principal rubber producing plants are 

 several species of Landolphia, and Lagos silk rubber (Fun- 

 tumia elastica). Other rubbers are the root rubbers — 

 Carpodinus lanceolatus and Clitandra Henrique siana. N'- 

 Harasika rubber tree (Mascarenhaisa elastica). Some 

 rubber is also obtained from Ficus Vogelii and the genus 

 Tabernamontana 



These are widely distributed over tropical Africa. On 

 the West Coast from Senegambia, Sierra Leone, Gold 

 Coast, Ivory Coast, Lagos, Cameroons, Nigeria, Congo, 

 Gaboon, to Angloa and Benguela, On the East Coast from 

 Mozambique, Madagascar, Zanzibar, Nyasaland to German 

 East Africa. From the interior of Africa, rubber is ex- 

 ported from Uganda. The following trade names indicate 

 from where African rubbers are exported: — Madagascar- 

 niggers, Mozambique ball, Hausa thimbles, Niger cake, 

 Ivory Coast lump, Hausa tail, Benin lump, and others. 



The total output of African rubber is stated to be 

 23,000 tons (which is said to be excessive by some autho- 

 rities) of this 4,800 tons is supplied by the Congo State, 

 about 1,500 tons from the Gold Coast (a considerable 

 shrinkage from previous years) and the balance from other 

 parts of Africa, chiefly Madagascar Mozambique, Uganda, 

 Lagos, Angola, and the Cameroons. 



Asiatic or Eastern rubbers include Assam rubber, i.e. 

 Malayan Rambong, (Ficus elastica), Gerip, Singarip, or 

 Bornean rubber (Willughbeia sps:). Other genera are 

 Leuconotis, Ureeola, Melodinus, and Parameria. There 

 are other rubbers but these do not appear to be included in 

 the usual records and are not mentioned now. At the 

 present time the most important sources of wild rubbers 

 are Sumatra, Borneo, and possibly New Guinea. Figures 

 shewing the output are given from British India only and 

 are placed at 200 tons. 



