41 
01 TJl e in Mexico, ( Castilloa Elastica) Mangabeira rubber 
(Hanconna speciosa) and recently from Mexico “Guayule” 
(Paithenmm argentatum). The following genera" also 
produce valuable rubber which is probably mixed with 
rara —Micrandra, Saprmn, 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- 
tourth 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- 
tunua elastica). Other rubbers are the root rubbers— 
tarpodmus lanceolatus and CUtanclra Henriquesiana N’- 
Harasika rubber tree (Mascarenhaim elastica). Some 
fl '° m FkUS V09elii and the ^nas 
„ S 168 ? n re W . id n ly distributed over tropical Africa. On 
Uiast' f ri, C °n f r°“ Senegambia, Sierra Leone, Gold 
Coast, Ivory Coast, Lagos, Cameroons, Nigeria, Congo. 
Gaboon to Angloa and Benguela. On the East Coast from 
Madagascar, Zanzibar, Nyasaland to German 
East Africa. From the interior of Africa, rubber is ex- 
from wWe ?f‘ nda " M 16 f ° ll0Wing trade indicate 
iiom wiieie African rubbers are exported; — Madagascar- 
niggers, Mozambique bal.l, Hausa thimbles, Niger cake 
Ivory Coast lump, Hausa tail, Benin lump, and others. ’ 
total output of African rubber is stated to be 
1S . said . to be excessive by some autho- 
abont l f vnn 1S i 4,80 r t0ns « s s "PP lied b T the Congo State, 
sbrAd’ 2° t0n ® f -° m the Gold Coast ( a considerable 
S*r m previous 3 -ears) and the balance from other 
paits ol Aliica, chiefly Madagascar Mozambique, Uganda 
-Lagos, Angola, and the Cameroons. 8 ’ , 
Asiatic or Eastern rubbers include Assam rubber i e 
Malayan Rambong, (Ficus elastica), Gerip, Singarip or 
Bornean rubber (Willughbeia sps/). Other generate 
Leuconotis, Urceola, Melodinm, and Parameria. There 
the bllt n heSe d °‘ n0t a PP ear t0 be included in 
the usual records and are not mentioned now. At the 
piesent time the most important sources of wild rubbers 
are Sumatra, Borneo, and possibly New Guinea. Figures 
s ™ ,r ™ »“* 
%r 
