INDEX 



Acre, 21 



Acreage under rubber, 12 

 Africa, Central and East, plantation 

 industry in, 1 1 



West, 33 

 African rubber, 30 et seq. 



largely exterminated, 30 



new plantations of, 32 

 Agricultural machinery, 99 

 Alstonia, 36 



plumosa, 36 

 Amazon region, 17 



foodstuffs in, 23 



rubber industry, economic as- 

 pects of, 21 

 Amazonas, 21 



American species of rubber, 17 etseq. 

 Angle of cut, 145 

 Angola, 33 



rubber planting in, n 

 Animal pests of Hevea, 179 

 Asiatic rubbers, 34 

 Assam, 34, 208 



Balls, india-rubber, 229 

 Bamber, M. Kelway, 56 



pricking method, 134 

 Bark, effects of wounding the, 47 



renewal of, 49 



ringing the, 47, 48 

 Basal system of tapping, 139 

 Bath process, Hancock's, 233 

 Biffen, centrifugal method of separ- 

 ation, 159 

 Biscuit rubber, 154 



approximate composition of, 



Block rubber, 164, 167 



Bordeaux mixture, for Pink disease, 



190 



Boring insects, 52 

 Borneo, 36 

 Botanical sources of rubber, 16 et 



seq. 



Botryodiplodia theobromae, 191 

 Bouchardet, discovery by, 215 

 Bowman-Northway pricker, 132 

 Brain, Lewton, estimate by, 13 

 Brazil, collection of rubber in, 



*9 



labour in, 23 



replanting wild rubber in, 209 



transport in, 23 



Brazilian Government, encourages 

 rubber planting, 12 



legislation by, 22 



premiums offered by, 23 



special concessions by, 23 

 British India, wild rubbers from, 5 

 British West Africa, Funtumia in, 



207 



Brown root disease, 186 

 Burma, Ficus elastica in, 34 



Hevea plants sent to, 7 

 Burrs, 192 



Cacao, as intercrop, 114 

 Calendering, 227 

 Cambium, 41, 44, 48 

 Cambodia, 35 

 Canker, 187 



of Hevea fruits, 189 



remedy of, 188 

 Capital in rubber, 15 



