viii PREFACE TO THE SECOND EDITION. 



L Agriculture pratique des pays chauds ; Journal of the Royal 

 Society of Arts, and Tropical Life. 



New methods of collecting and preparing rubber are being 

 frequently evolved, and in view of the industry's comparative 

 infancy there is every probability that what are to-day recognised 

 as up-to-date, or standard, systems, will in a few years be con- 

 sidered quite obsolete. 



I wish to register my indebtedness to numerous friends who 

 have assisted me in compiling this edition, and to my friend, 

 Mr J. H. Holland, for kindly revising the proof sheets. 



W. H. JOHNSON. 



BEIRA, SOUTH-EAST AKRU 

 December 1908. 



