Nigeria — -{cont.) 



Forests, 163, 182, 183, 194, 200: des- 

 truction of, 194, 195: reserves, 183, 

 186, 194, 195, 200; Fruit, cultivation 

 of, 368; Game animals in, 221, 274: 

 reserves, 233; Geodetic surveying, 41, 

 42; Geological Department, 64-6, 73, 

 79, 116: surveying, 63, 65; Gold- 

 mining, 531; Grasses, 173; Gum arable 

 cultivation, 207; Hospitals, 486, 487; 

 Hydrology, 79, 80; Indigo dyeing, 

 340; Insect pests in, 282, 283, 285, 

 286; Kola cultivation, 372; Leper 

 settlements, 487; Locust research, 263, 

 264; Maps, 41, 48, 49; Medical census, 

 564; Medical Department, 465, 547, 

 573; Medical Research Institute, 524: 

 services, 471, 485-7, 515, 516: training 

 of Africans for, 506-8, 514; Meteoro- 

 logical service, 107, 108; Mineral re- 

 sources, 67, 531; Minerals, reference 

 collections of, 66; Missions, 487; Mixed 

 farming, 276, 315, 322, 424; Moulds in, 

 175; National park proposed, 233; 

 Native customs, 559; Northern Terri- 

 tories: Agriculture, 5, 371, 380, 386, 

 3875 394: Animal industry, 381, 415: 

 Anthropology, 595, 611: Climate, 112: 

 Diseases, stock, 449-51 : Emirates, 435, 

 450: horses used in, 433: water-supply, 

 7, 64: Hospitals 486: Medical services, 

 564: Meteorological services, 107: 

 Mixed farming, 322, 383, 389-91, 396: 

 Population census, 560: Rainfall, 5: 

 Sahara, encroachment of, 116, 189, 

 ^94> 195" Sleeping Sickness Service, 

 486: Surveying, 42: Termites in, 291: 

 Trees, 157, 198: Trypanosomiasis, 

 human, in, 275, 531-3: Tsetse in, 163, 

 274: control of, 195, 532, 533: Vegeta- 

 tion, 163: Water-supply, 79, 80, 194; 

 Nutrition of natives in, 468, 573, 574, 

 578; Oil-palm cultivation, 350, 351, 

 382; Oilseeds, cultivation of, 348, 353; 

 Onitsha Province, 560; Owerri Pro- 

 vince, agriculture in, 378: population 

 census, 560: pressure on land, 79, 378: 

 water-supply, 79, 84; Pasture research, 

 173, 322; Plants, 157, 166; Polar Year 

 Observations, 108; Population, 274, 

 478: census, 559, 564, 611: pressure on 

 land, 343, 378, 381; Poultry farming, 

 322; Rain forests, 189; Rainfall, 107, 

 134: map, 108; Root crops, cultivation 

 of, 359-62, 382; Sanitary Service, 486; 

 Shifting cultivation in, 194, 378; Skins, 

 export of, 454; Sleeping Sickness Ordin- 

 ance, 275, 486; Sleeping Sickness Ser- 

 vice, 268, 274, 485, 486, 528, 531; Soil, 

 134, 141: deterioration of, 381, 382: 

 survey, 133; Southern Provinces, agri- 



INDEX 725 



culture in, 322, 340, 343, 346, 382, 383, 

 389: Animal industry, 390, 454: Dis- 

 eases, human, 521, 528: Forest flora, 

 I57> ^98- Medical census, 564: Mis- 

 sions, 470, 487: Population census, 560: 

 pressure on land, 11, 382: Rainfall, 

 107, 108: Soil, 381, 382: Tribes, 611: 

 Trypanosomiasis, human, 531: Tsetse 

 control, 38, 275, 276, 451: water-sup- 

 ply, 79; Standard of living, native, 371; 

 Stock survey, 414; Survey Department, 

 49; Surveying, 39; Tapioca manufac- 

 ture, 361; Taungya plantation, 188, 

 194; Timber, 194, 204; Tobacco in, 

 288, 371; Trees, 198; Tribes, 611; Try- 

 panosomiasis, cattle, 267, 424, 448: 

 human, 15, 275, 529, 532, 534; Tsetse 

 control, 195, 275-7, 467; Tsetse inves- 

 tigation, 268, 274, 279, 319; Veterin- 

 ary Department, 390, 452, 460: re- 

 search, 323; Water-supply, 67, 79, 80, 

 107, 194: surveys, 116; Wells, 64, 66, 

 67? 79; \Vind maps, 108; Yellow Fever 

 Unit, 524 



Nigerian Field, 219 



Nile Perch, 244, 252 



Nile River, 91, 114, 244, 278, 611: Basin, 

 100: levelling, 76: meteorology, 99, 

 1 01, 102; Fisheries, 244, 248; Floods, 

 III; Irrigation, 75, 102; Maps, 50; 

 Upper — , 610; Valley, 226; Water 

 table surveys, 76 



Nilo-Hamites, 610 



Nilotic Jaluo, 586 



Nilotic Tribes, 610 



Nilsson, E., 1 12 



Nioka, Crop research, 

 ment stock farm, 174, 



,452 



Nioro, 329 



Nitrogen: Atmospheric, fixed by legumes, 

 141, 189, 385: Cycle, 130, 141; In Soil, 

 130, 1 41 5 373: deficiency of, 129, 134, 

 386 



Njala Agricultural Research Station: 

 Acclimatization station, 150; Agricul- 

 tural training, 403; Cereals, research 

 on, 324, 325; Citrus, research on, 324, 

 368; Coffee, research on, 324, 364; 

 Fertility, research on, 384; Forestry 

 research, 197; Herbarium, 150; Oil- 

 palm research, 324, 351; Root crops, 

 research on, 360, 362 



Njombe, 421, 430 



Njoro, 320 



Nkana Copper ^'lining Company, 481 



Nkole Tribe, 610 



Nodular VV^orm Infection, 444 



Nongoma, 437 



Noriskin, J. N., 577 



Normande Cattle, 426 



330; Govern- 

 331, 426, 430, 



