242 



INDEX 



Hevea collina, 101 



Hevea confusa, 102 



Hevea cuneata, 101 



Hevea discolor, 102 



Hevea Duckei, 101 



Hevea guianensis, 2, 101 



Hevea lutea, 101 



Hevea microphylla, 102 



Hevea minor, 102 



Hevea nigra, 101 



Hevea paludosa, 101 



Hevea rigidifolia, 102 



Hevea similis, 102 



Hevea spp., 101 



Hevea Spruceana, 102 



Hevea viridis, 102 



Honduras, British, production of 



rubber in, 10 

 Hymenochaete noxia, 118 

 Hymenolophus Romburgii, 41 



Ineaida leprosa, 24 



Incisions, basal V or Y, 65 ; single 



oblique, 65, 67 ; V, 65, 67 ; 



horizontal, 66 ; reopening of, 66, 



121-2 ; herringbone, 66, 67 ; 



spiral, 66, 67 ; vertical, 66, 67 

 India, area vmder rubber in, 5 ; 



production of rubber in, 10 

 Iponioea Bona-nox, infusion of, 



used to coagulate Castilloa 



latex, 216 



Jamaica, production of rubber in, 

 10 ; yield of rubber from Cas- 

 tilloa trees in, 224-5 



Java, area under rubber in, 5 ; 

 yield of rubber from Ficus 

 elastica in, 232-3 



Jelutong, 42 



" Kano rubber " from Northern 



Nigeria, 21, 236 

 Kickxia elastica (see Funtumia 



elastica) 

 Kickxia spp., 160 



Landolphia chylorrhiza, 40 ; yield 



of rubber from, 205 

 Landolphia Daioei, 24, 40 ; botan- 

 ical characters of, 1 90 ; rate of 

 growth of, 191, 192; yirld of 

 rubber from, 202 ; composition 

 of rubber of, 211 

 Landolphia dondeensis, 40 

 Landolphia Droogmansiana. 40 

 Landolphia florida, 14, 21, 23 

 Landolphia Qentilii, 40 ; yield of 

 rubber from, 201 



Landolphia Heudelotii,li, iO ; bo- 

 tanical characters of, 188 ; dis- 

 tribution of, 188 ; rate of growth 

 of, 192 ; yield of rubber from, 

 197; composition of rubber of, 

 211 

 Landolphia kilimandjarica, 25, 40 

 Landolphia Kirkii, 40 ; bo- 

 tanical characters of, 1 89 ; dis- 

 tribution of, 1 89 ; yield of rub- 

 ber from, 201 ; composition of 

 rubber of, 211 

 Landolphia Klainei, 40 ; bo- 

 tanical characters of, 189 ; 

 distribution of, 189; rate of 

 growth of, 191, 192 ; yield of 

 rubber from, 201 

 Landolphia madagascariensis, 2, 40 

 Landolphia owariensis, 2, 15, 40 ; 

 botanical characters of, 188 ; 

 distribution of, 189; yield of 

 rubber from, 198—201 ; rubber, 

 cost of collection, 205 ; compo- 

 sition of rubber of, 211 

 Landolphia parvijolia, 40 ; bo- 

 tanical characters of, 190 

 Landolphia Perrieri, 40 

 Landolphia rubber vmes, 40 

 Landolphia senegalensis, 14 

 Landolphia sphaerocarpa, 40 

 Landolphia Sfolzii, 40 

 Landolphia suhturhinata, 23 

 Landolphia Thollonii, 40 ; bo- 

 tanical characters of, 190 ; 

 yield of rubber from, 204 ; 

 rubber, time occupied in col- 

 lection of, 206 

 Landolphia Thompsonii, 17, 20 

 Landolphia ugandensis, 23, 25, 40 

 Landolphia icatsoniana, 25, 40 

 Latex, characters of, 46 ; specific 

 gravity of, 47 ; composition of, 



48 ; proportion of rubber in, 



49 ; function of, 56 ; coagula- 

 tion of, 69 ; coagulation of, 

 Henri's experiments on. 69 ; 

 methods of coagulating, 70-3 ; 

 collection of, on plantations, 123 



Laticiferous tissue of Hevea brasi- 

 liensis, Calvert's researches 

 on, 45 ; Fitting's researches on, 

 45 ; Scott's researches on, 45 ; 

 Arens's researches on, 46 



Laticiferous tissue of Manihot 

 Qlaziovii, Calvert and Boodle's 

 researches on, 46 ; Scott's re- 

 searches on, 46 



Laticiferous tissues of plants, 44- 

 ; development of secondary, 59 



