i ;6 



INDEX. 



Drying rubber by means of vacuum 

 apparatus, 137 



rubber in stoves, 142 



rubber, Use of calcium chloride 



for, 137 



E 



Epidemics, 19 



Erythrina used as shade for cocoa, 39 



Estate plotting, 35 



Estimated consumption of rubber, 2, 9 



expenditure, 153 



production of rubber, 15 



yield of rubber, 15 



Factory, 123 



Fences, 52 



Fermentation, 129 



Fertilisers, 48, 50 ' 



Flake rubber, 116 



Floods, Injuries caused by, 34 



Formalin, 67 



Formic acid, 133, 134 



Fungicides, 54 



Fungus canker of Hevea, 54 



diseases, 52 



diseases, Treatment of, 54 



Losses due to, diseases, 52 



spores, Mode of infection by, 53 



Grading rubber, 144 

 Green manuring, 49 

 Ground-nuts, 40 

 Growth, 22, 25 



H 



Harrowing, 42 



Heating of rubber, 93 



Hevea brasiliensis, Description of, 21 



brasilicnsis, Enemies of, 5 1 



brasilicnsis, Growth of, 22, 25 



brasilicnsis, Habitat of, 21 



brasiliensis, Latex of, 63 



brasilicnsis, Laticiferous system of, 



63, 76 



brasiliensis, Propagation of, 27 

 Hydraulic press, 118 



Impurities in rubber, 97 



Mechanical, 97 



Removal of, by straining, 109, no, 



132 



Removal of, by washing, 97 

 Insecticides, 61 



Insects, 59 



Checking ravages of, 60 

 - Habits of, 59 



Life history of, 59 



Trapping of, 60 



Insoluble constituent in rubber, 94 

 Introduction of Hevea to the East, 4 



Labour, 18 



Lace rubber, 98, 113 



Latex, Action of acids on, 101 



Action of ammonia on, 67 



Albuminous matter in, 96 



Alkalinity of, 66 



Chemical composition of, 64 



Creosoting, 129, 130 



Decomposition of, 67 



Functions of, 63 



Mechanical impurities in, 97, 114 



Mineral matters in, 96 



Odour of, 66, 98 



Properties of, 64 



Proteids in, 96 



Resins in, 96 



Storing of, 66 

 - Variation of, 77 

 Laticiferous system, 63, 76 

 Laticifers, Origin of, 63, 76 

 Lime, 47 



Lining estates, 36, 38 

 Litmus paper, 47, 67, 130 



Machinery, Centrifugal, 109, 130 



Coagulating, 109 



Crepeing, 114 



Washing, 123 

 Magnesia, 45 



