370 



INDEX 



Pineapples, canning of, 100 



cultivation of, 95 



in cold storage, 98 



juice of, 100 



profits from, 41 



ripening of, 97 



shipment of, 98 

 Piper cubeba, 219 



clusii, 247 



longum, 247 



methysticum, 225 



nigrum, 246 

 Pimento, acris, 289 

 Pimento, 240 

 Pimento oil, 288 

 Pipturus gaudichaudianus, 189 

 Pistacia lentiscus, 212 



vera, 141 

 Pistachio nut, 141 

 Pita fiber, 172 

 Plantain (see Bananas) 

 Plant diseases in Tropics, 28 

 Plantation rubber, 197 

 Plants affected by climate, 7-10 

 Plowing heavy soils, 21 

 Plumeria, 259 



Pogostemon patchouli, 288 

 Poha, 132 

 Pomegranate, 123 

 Pomelo, 102 

 Pongam oil, 282 

 Poppy-seed oil, 270 

 Porto Rican pea, 305 

 Potash in molasses, 52 



in volcanic cinder, 17 

 Potatoes, sweet, 152 

 Poultry, 340 



Precipitation in Tropics, 4 

 Prickly pear, 317 

 Profits in tropical agriculture, 40 

 Prosopis julifiora, 302 

 Prunus amygdalus, 139 

 Psidium cattleianum, 122 



guajava, 121 

 Psycho tria ipecacuanha, 219 



Pulu, 191 



Punica granatum, 123 



Quassia, 226 

 Quebracho, 230 

 Queensland arrowroot, 153 

 Queensland nut, 141 

 Quinin, 214 

 Quinoa, 148 



Races in Tropics, 35-42 



Raffia, 185 



Ragi, 147 



Rainbows, 7 



Rainfall in Tropics, 4, 5 



Rainy seasons, 4 



Rambutan, 12" 



Ramie, 176 



Rape-seed oil, 276 



Raphia ruffia, 185 



Raphionacme utilis, 201 



Rattan, 192 



Rattoons, 46 



Ravensara nuts, 251 



Red pepper, 244 



Refrigeration of tropical fruits, 30 



Resins and gums, 211 



Rhea feathers, 343 



Rhizophora, 229 



Rhodes grass, 313 



Rhus cotinus, 233 



succedanea, 283 

 Rice, 143-147 

 Rice oil, 278 

 Rice paper plant, 188 

 Rice straw, 188 

 Root rubbers, 201 

 Rose, otto of, 261 

 Rose apple, 131 

 Roselle, 125 

 Roselle fiber, 181 

 Rosewood, 292 

 Rubber, 193-204 



artificial, 196 

 Rubber vines, 201 



