RUBBER PLANTING 



241 



Hevea brasiliensis, continued 



flowers of, 19 



fungus diseases of, 182 



gross structure of bark, 44 



in Ceylon, 8 



irrigation in cultivation of, 105 



latex, coagulation of 54 



latex, composition of, 53, 54 



latex vessels in, 43, 45 



leaf-fall, 19 



pests of, 176 



planting operations, 93 



plants arrive in Ceylon, 7 



plants sent to Burma, Java, 

 Singapore and W. Indies, 7 



plants sent to Mauritius, W. 

 Africa and Fiji, 7 



repeated tapping of, 91 



seeds of, 19 



seeds, 122 



tapping experiments in, 56 



section of bark, 46 



species of, 17 



Spruceana, plants sent to Cey- 

 lon, 7 



wound response in, 59 



yields of rubber from one tree, 



9 



Hill, H. C., on Ficus elastica, 208 

 Holing and planting, 109 

 Hooker, Sir Joseph, 5 

 Hose-pipes, 231 

 Hymenochaete noxia, 184, 186 



Incision, methods of, 59 

 India, rubber planting in, 1 1 

 India-rubber balls, 229 



chemistry of, 210 

 Indigo, as intercrop, 114 

 Indigofera, 113 



Insects, pests of Hevea, 180 et seq. 

 Intercrops, 108, \\^etseq. 



cacao, 114 



coffee, 114 



cotton, 114 



in Ceylon, 113 



in Sumatra and Java, 114 



indigo, 1 1 4 



tea, 114 



Irrigation, 103 

 Isoprene, 214 et seq. 



Java, 7, 35 



Ficus elastica in, 208 > 



labour in, 122 

 Jelutong rubber, 36 



export of, 37 



Kamarun, Funtumia in, 207 

 Kerckhove, Van den, estimate by, 12 

 Kickxia africana, see Funtumia 

 elastica 



Labour, in Brazil, 21 



in Ceylon, 123, 124 



in Java, 122 



in Malaya, 123, 124 



in S. India, 123 



system of advances, 125 

 Lagos silk rubber (Funtumia elas- 

 tica), 30 

 Lagos, wild rubber exported from, 



5 

 Land tenure, in Ceylon, 97 



in other countries, 97 

 Landolpkia, climbing rubber, 17, 32 



Dawei, 33 



Jlorida, 33 



Heudelotii, 33 



Kirkii, 33 



owariensis, 33 

 Latex, 38 



bulk extracted in a year, 91 



cleanliness in dealing with, 151 



effect of tapping on, 82 



effect of water supply on, 88 



manufacture of, 69 



movement of, 70 



origin of, 68 



percentage of rubber in, 83-84 



physiology of, 56 



production, physiology of, 38 



protective function of, 52 



seasonal variation in, 71, 84 



seasonal variations in concen- 

 tration of, 84-85 



smoking of, 165 



transport of, 156 



16 



