TABLE OF CONTENTS 



CHAPTER I 



THE HISTORY OF THE USE AND CULTIVATION 

 OF RUBBER 



Early uses. Vulcanised rubber. The discovery of rubber in America. 

 The trade in wild rubber. Sir Clements Markham proposes plantations. 

 Collection of seeds by Collins, Wickham and Cross. Hevea brasiliensis in 

 Ceylon. Early experiments. Rise of the plantation industry in the East. 

 Area under plantations. Production from estates. Variations in the price 

 of raw rubber. Capital involved pages I 15 



CHAPTER II 



THE BOTANICAL SOURCES OF RUBBER 



List of species. American species. Hevea brasiliensis. Economic 

 aspects of the Amazon rubber industry. Manihot species. Castilloa. 

 Hancomia and other species. Guayule rubber. African rubbers. 

 Funtumia. Landolphia. Other African species. Asiatic rubbers. 

 Ficus clastica. Jelutong rubber 16 37 



CHAPTER III 



THE PHYSIOLOGY OF LATEX PRODUCTION 



The structure and functions of the vegetative organs. The laticiferous 

 system. Latex tubes. Latex vessels. Structure of the bark of Hevea. 

 Minute anatomy. The effects of wounding the bark. Renewal of bark. 

 The functions of latex. The composition of Hevea latex. Coagulation. 



38-55 



