CONTENTS 



chapter i 

 Intkoduction 



Historical — Utilisation of rubber — Cultivation of rubber plants — 

 World's production of rubber — Rubber production in America, Africa, 

 and Asia — Rubber produced in the British Empire . . pp. 1-10 



chapter ii 

 Rubber est British Africa 



Gambia, Sierra Leone, Gold Coast, and Nigeria — Uganda, East 

 Africa Protectorate, and Nyasaland — Zanzibar and Pemba — Transvaal 

 ■ — Natal — Rhodesia ....... pp. 11-28 



chapter iii 

 The Principal Rubber- yielding Plants 



Geographical distribution — Botanical source — Principal rubber 

 plants belonging to the natural orders Euphorbiaceae, Urticaceaie, 

 Asclepiadaceae, Apocynaceae, and Compositae . . pp. 29-4.3 



chapter iv 

 Latex 



Laticiferous tissues of plants — Characters of latex — Composition 

 of latex — Caoutchouc, Resin, Protein, Carbohydrates, .Minorul matter 

 — Function of latex PP- 44-57 



