Trapnell, C. G., 131, ;l 133, 161, 170, 



190, 379 . 

 Trees: Exotic, diseases of, 201, 202, 209, 



210: effect on water-supplies, 202, 203: 

 experimental planting, 189, 193, 201- 

 203: problems created by introduction, 

 176, 201, 202: transpiration rates, 9, 

 202; Forest, 198, 199: diseases of, 174: 

 taxonomy, 203: transpiration rates, 

 172, 179; Medicinal, 209; Timber, 198, 

 203-205 

 Trelawny Tobacco Research Station, 



314, 317, 370 



Trematode, 444, 550 



Trewavas, Tvliss, 242 



Trichinella, 550 



Trichogramma, 283 



Trigonometric Surveys, 30, 31, 35, 36 



Trinidad: A.gricultural research station, 

 145; Empire Cotton Growing Corpora- 

 tion station, 355; Imperial College of 

 Tropical Agriculture, 20, 316, 326 



Tripoh, 52, 92, 102 



Tripoli tani a, 52 



Trochain, G., 282, 348 



Trolh, Dr., 499, 534, 565, 578 



Tropical Diseases Bulletin, 467, 468, 480, 

 562 



Tropical Medical Research Committee, 

 469 



Tropics: Agriculture, 306; Flora, 155-8; 

 Fungus diseases, 175; Humidity, 106, 

 121, 134; Light-intensity, 121; Rain- 

 fall, III; Soil, 124, 125, 127, 128. 134; 

 Sun-spot cycles in, 6; Trees, 187, 209 



Troup, Protessor, R. S., 177, 178 n., 180, 



191, 201 

 Trout, 243, 248; introduction of, 250-2 

 Trypanosomiasis, 14, 15, 259, 273, 278, 



295; Animal carriers of, 226, 267, 529, 

 530; Research organization, 18, 277, 

 314, 482; Transmission, 277 

 Trypanosomiasis, Animal: Cattle, 267, 

 297, 421, 423, 445, 447-51, 453: con- 

 trol ot, 214, 272-4, 390, 447, 448, 450- 

 452 — and see Tsetse control: curative 

 treatment for, 323, 448: resistance to, 

 279, 390, 415, 416, 424, 425, 448, 453; 

 Goats, 431, 529, 530; Pigs, 432; Sheep, 



529, 530 



Trypanosomiasis, Human: 267, 463, 489, 

 553; .\nimal carriers, 267, 529, 530; 

 Control, 448, 466, 467, 486, 530-2 — 

 and see Tsetse control; Epidemics, 527, 

 531? 533, 535; Gambiense, 267, 529-32; 

 Incidence, 529, 531 ; League of Nations 

 Commission on, 528, 543; Research on, 

 525, 528-31; Rhodesiense, 267, 529-31; 

 Surveys of, 531, 532, 534; Treatment, 

 268, 279, 493-7, 500, 530, 532-5 



Tryparsamide, 533, 534 



INDEX 741 



Tsetse Fly, 257, 449-51, 528, 529; Areas 

 inhabited by, 13, 267, 381; Areas 

 reclaimed from, 7, 13, 259, 268, 269, 



271, 272, 391, 532, 533; Bionomics of, 

 273, 530; Control, 13, 268, 452, 531: 

 assistance of air survey to, 278: Bio- 

 logical 271, 273: By clearing vegeta- 

 tion, 195, 269, 272, 273, 275, 276, 278, 

 279, 53.2, 533, 535: By densification of 

 vegetation, 214, 270, 276, 277: By 

 game destruction, 10, 214, 259, 269, 



272, 273: By grass fires, 214, 269, 270, 

 277-9: By killing females, 270: By 

 trapping, 269, 270, 273, 277, 278, 533, 

 535; Ecoclimates of, 11 7-19, 275-8; 

 Ecolog>' of, 1 19, 225, 271, 273; Foci of 

 concentration, 270, 273; In game re- 

 serves, 230; Parasites of, 271; Confer- 

 ences on, 277, 326, 479; Economic 

 Advisory Council: Tsetse Fly Com- 

 mittee, 268, 528; Field work, 273, 467: 

 Laboratory, 270, 273-6, 279, 280, 324, 

 528, 531, 532; London School of 

 Hygiene, 276, 277, 530; Species, 258, 

 267; Temperature, effect of, 275-7 — see 

 also Tanganyika, Tsetse Research De- 

 partment — -and Trypanosomiasis 



Tsetse Fly Committee, see under Economic 

 Advisory Council 



Tshibinda, loi 



Tshikapa, 502 



Tuareg Tribe, 605 



Tuberculosis: Native, 449, 517: case 

 mortality, 542, 543, 546: in mining 

 areas, 542, 543; incidence of infection, 

 543, 544; introduced by white settlers, 

 542, 544: League of Nations report on, 

 543: potential increase of resistance, 

 545: research on 464, 468, 474, 482, 

 543-5: treatment, 510, 545, 546: 

 vaccine, 494; Stock, 431, 449, 452, 542 



Tumbuka-Kamanga Peoples, 610 



Tumor formation and growth, 474 



TungOil, 337, 373, 374 



Tunis, 92, 103; Pasteur Institute, branch 



of, 494 



Tunisia, 51, 103, 104, 297 



Turina Cattle, 427 



Turkana Province see under Kenya 



Turner, Dr. J. G. S., 564 



Turning sickness, 448, 451 



Typhoid, 62, 517, 552, 553 



Typhus, 517; Investigation, 474, 540; 

 Louse — , 540-2; Rat-flea — , 468, 540, 

 541 ; Tick-bite — , incidence of, 540, 



542 

 Tzaneen, 474 



U.A.C., 396, 460 

 Uba sugar-cane, 372 

 Ubangi District, 163, 357, 358 



