INDEX. 



177 



Maintenance, 153 

 Maize, 41 

 Manures, 48 

 Micro-organisms, 47 

 Mulching, 30, 48 

 Mycelium, 53, 55, 57 



Nitrification bacteria, 46, 47, 48 

 Nitrogen, 45, 46, 49 

 Nurseries for seedlings, 28 



Shade for, 28 



Site for, 28 



Packing rubber for export, 144 

 Para, Climate of, 21 

 Parasites, 52 

 Pests, Animal, 52 

 - Fungus, 52 



Insect, 59 

 Plantation, Site for, 33 



-- rubber, Defects of, 128 

 Plants, Organic excretions of, 47 

 Preparation of rubber, 98 

 Pricking rubber trees, 76, 87 

 Propagation by cuttings, 30 



by marcotting, 31 



by seeds, 28 

 Pruning, 43 

 Putrefaction of rubber, 132 



Rainfall in Africa, 22 



in Ceylon, 21, 33 



in Malaya, 22 



in Para, 21 

 Roots, Care of, 38 



Rubber, Adhesive principle of, 94 



Analyses of, 65, 95, 108, 120 



Areas of cultivated, 4, 14 



Artificial, 20 



biscuits, 3, 35, 102, 107 

 - Bitinga, 14 



Chemistry of, 64 



Collection of, 88 



Rubber, Compressibility of, 93 



Congo, 12 



Consumption of, 2, 9 



Contractility of, 93 



Cultivated, 4, 10, 14 



Drying of, 112, 136 



East African, 13 



Effect of heat on, 93 



Effect of light on, 93, 129 



Elasticity of, 93 



Factory, 123 



Guayule, n 



Imports of, 2 



Insoluble constituent of, 94 



Madagascar, 13 



Mastication of, 98 



Nervous principle of, 94, 97, 101, 



128 



Permeability of, 93 



Prices of Para, 7, 8 



- Production of, 9, 27 



Properties of, 93 



Proteids in, 96 



- Resiliency of, 133 



Resinous matters in, 66, 95, 97, 



1 06, 135 



Seringa, 10 



Sheet, 107, 114 



Solubility of, 94 



Solvents of, 94 



Synthetic, 20 



West African, 12, 147 



Scrap rubber, 119 



rubber, Crepeing of, 119 

 Seedlings in bamboo pots, 29 



in baskets, 30 



Seeds of He-uea brasilicnsis, 26, 28 



Germination of, 26 



Oil in, 1 68 



Selection of, 27 

 Shade-trees, 39 

 Sheet rubber, 107, 114 

 Smoking rubber, 129 



Soils, Biological condition of, 45 



Chemical condition of, 45 



