306 SYLVICULTURE IN THE TROPICS 



Planting compared with sowing, 187 



-dagger, 179, 180 



-stake, 142, 173, 179 



with balls of earth, 139, 176 



without balls of earth, 139, 179 



with baskets, 178 



with transplanter, 179 

 Plants, distances between, 183 



shading, 136, 185 

 Pleurostylia Wightii, 23 

 Plumbago zeylanica, 50 

 Pneumatophores, 46 

 Podocarpus, 34, 41, 42, 43, 44 50 



elongatus, 44 



milanjianus, 43, 44 



milanjianus var. arborescens, 50 

 Poinciana regia, 263 

 Pole, 106 

 Pole-forest, 107 

 Pollarding, 196 

 Pollination by animals, 66 



by wind, 55 

 Polygalaceae, 56 

 Porcupines, 72 

 Pot-layering, 146 

 Preliminary operations on area to be 



afforested, 150 

 Preliminary treatment of seed, 117 

 Preparatory- fellings, 207 

 Principal species, 107 

 Propagation by rhizomes, 147 

 Prosoj/is spicigera, 13 

 Proteaceae, 43 

 Protection against rolling stones, 296 



from fire, 266 



of plants by ants, 68 

 Pruning, 235, 245 



-hook, 116, 117, 235 



-knife, 235 



-saws 236 



-shears, 235 



the taproot, 137 

 /'siniima arenaria, 286 

 Pseudocedrda, 32, 43 

 Pteris aquilina, 137 

 Pterocarpus, 29, 56 



Marsupium, 41 



f'frmsjx rmiim, 56 



l'uin|>s for irrigation, 128 

 Puna, 45 



Pupalia orbiculaia, 285 

 Purchase of seed, 115 

 Pure and mixed crop, relative advantages 

 of, 110 



crop, 107 



i rop of different ages, 231 



crop of even age, 230 



Quercut incana, 11 

 pruinosa, 12 



Rafflesia, 66 



Rainfall, effects of, on forest growth, 18 



forests and, 96, 97 



zones of, 20 

 Range of temperature, 19 

 Rats, 72 

 Red Cedar, 34 

 Red Doon, 40 

 Regeneration, artificial, 106, 113, 115 



artificial, to assist or replace natural 

 regeneration, 222 



by coppice, 113, 189 



by culms, 197 



bv cuttings, 144, 184 



by layers, 146, 184 



by rhizomes, 147 



by root-suckers, 193 



by stool-shoots, 189 

 Regeneration, natural, 106, 113, 189 



by seed, 113, 201 

 Regeneration, relative advantages of 



natural and artificial, 222 

 Regular crop, 107 

 Relative humidity, 19 

 Relative values of artificial and natural 



regeneration, 222 

 Relative values of pure and mixed crops, 



110 

 Revetment walls on unstable slopes, 293 

 Rhizomes, regeneration l>y. 147 

 Rhizophora, 16, 47 



Mangle, 47 



mucronata, 46 

 Rhododendron, 29, 65 



arboreum, 40 

 Rhus abyssinica and A', oiscosa, 50 

 Ridge-mould, 133, 134 

 Ridging, 170 



Roads and paths in nurseries 125 

 Robinia, 293 

 Rodents, 72 

 Root-suckers, 107 



regeneration by, 193 



schooling of, 147 

 Rotation of a forest crop, 108 



of an agricultural crop, 14 

 Rubber, Ceara-, 24, 135, 1 15 



Funt mn in. 2 1 



India-, 62 



Landolphia, '24 



Para-, 24. 115, 120 

 Rubiaceae, 33, 234 



Sakia, 129, 130 

 Sal, 13, 22. 26, 27. 87 

 Salicineae, 56 

 Sand, shifting, 12 



shifting, fixation of, 284 

 Sand-binding plants, 284, 286, 287, 188 

 Sandy Boils, 7 



