734 INDEX 



Sierra Leone — (cont.) 



eases, human, 524, 549, 575; Ento- 

 mology, staff for, 261; Fisheries, 245, 

 246; Forestry Department, 181, 221; 

 Forests, 157, 197, 200: reserves, 186, 

 197; Fruit cultivation, 367, 368; Fun- 

 gus, 175; Game animals, 221, Geo- 

 detic survey, 41 ; Geology and Mines 

 Department, 63-5; Gold exported, 67; 

 Herbarium, 150; Hospitals, 448, 449; 

 Insect pests in, 282; Maps, 39, 41, 50; 

 Medical services, 488, 489: training 

 Africans for, 506, 515; Meteorological 

 service, 109; Mineral resources, 67; 

 Missions, 488; Nutrition of natives in, 

 575; Population, 488: census, 560; 

 Rainfall stations, 109; Root crops, 

 360-2; Soil Science, 133; Soil survey, 

 135 & n.; Topography, 35 n., 39; Trees, 

 199; Vital events, registration of, 562 



Sierra Leofie Notes and Records, 2 1 9 



Sikes, H. L., 78 



Silicosis of gold mining, 474 



Silkworm, 291 



Silviculture, see Forestry 



Sim, J. M., 95 



Sim, T. R., 158, 159 



Simmons, W. C., 74, 86, 114 



Simpson, N. D., 165 



Simsim, 339, 348, 349 



Simulium, see Biting-fly 



Sinai, Peninsula of, 50 



Sinclair, Dr. St. C. O., 129 



Singapore: Biochemical Laboratory, 579, 

 581; Epidemic Intelligence Bureau, 

 465, 466 



Sinoia, 478 



Sir Alfred Jones Laboratory, see under 

 Freetown 



Sisal, 306, 406; Blue — , 359; Experimen- 

 tal stations, 319, 358, 359: Weevil, 359 



Situtunga, 530 



Siwa, 102 



Skin beetle, 294, 454 



Skins: Animal, 308; exported, 211, 212, 

 431, 454; goat's, 431, 453, 454; Para- 

 sites of, 294, 453; Reptile, 211, 212; 

 Research on, 323; and see Hides 



Sladden, G. E., 287 



Slave trade, 340 



Sleeping Sickness, see Trypanosomiasis 



Sleeping Sickness Commissions, see under 

 League of Nations and Royal Society 



Small, Dr. W., 175, 364 



Smallpox, 465, 555; Vaccine, 494, 555 



Smee, C, 290 



Smit, B., 290, 294, 299 



Smith, A. J., 284 



Smith, Dr. E. C., 486, 556 



Smith, Dr. Edwin W., 593, 595, 600, 602, 

 604, 605, 608, 609, 612, 613 



Smith, Sir G. E., 599 



Smith, T., 419, 456 



Smith, W. Harden, 574 



Smuts, General, 160 



Snakes, 211, 212 



Snout Beetles, 282, and see Eucalyptus 

 Snout Beetle 



Snowden, J. D., 161, 341 



Soa, 152 



Sobat, River, 59, 76 



Societe Anonyme de Congelation Industrielle 

 du Poisson, 254 



SocietesdePrevoyance, 328, 347, 397, 398, 403 



Socie'te des Alines d' Or de Kilo-Moto, 70, 501, 

 502^ 



Societe Liter nationale Forestiere et Miniere de 

 Congo, see For miniere 



Society for the Preservation of Fauna of 

 the Empire, 215, 234 



Soda, 133, 582 



Sodium chloride, 578 



Sodium Salts, 125 



Soergel, H., 116 



Sofula, 476 



Soga, J. H., 608 



Soil: Acidity in, 124, 134, 135, 381, 406; 

 Alkali in, 125, 129, 134; Biology, 128, 

 129, 141, 142; Brak in, 125, 129, 

 138 n., 172, 369; Changes in, 16; Con- 

 servation, by fertilizers, 405: by 

 forests, 178, 179, 187-9, 191 -3> I99. 

 202, 313; Deforestation, effect of, 137, 

 159, 187-91, 194; Deterioration of, 8; 

 136, 137'. 1 39' 302, 381, 382; Factors 

 determining, i, 7; Irrigation, relation 

 to, 130; Reconditioning by tree plant- 

 ing, 189; Sedentary, 61 



Soil erosion, 3, 4, 127, 129, 131 n., 137- 

 141, 166, 269, 302, 411, 422; Causes: 

 Brak deposits, 125, 138 n.: Burning of 

 vegetation, 125, 137, 139, 188, 378, 

 379, 436: Cultivation methods, 8, 12, 

 122, 139, 188-92, 376-80, 434: De- 

 forestation, 137, 187-91, 194; Desicca- 

 tion 138; European influences, 13*9, 

 140: Overgrazing, 12, 125, 136, 137, 

 140, 169, 173, 434-6: Overstocking, 7, 

 137-9, 434-40: Population pressure, 

 138, 139' 378, 380, 567: Termites, 142, 

 190: Water, 137, 39 1: Wind, 138, 391; 

 Methods of control, 140, 142, 151, 169, 

 303, 306 : Conservation of forest, 1 78, 

 179' 187-9, I9I-3' 199' 202, 313; Con- 

 tour cultivation, 321, 380, 382, 384, 

 393' 439: Irrigation, 129, 130: Manur- 

 ing, 321, 377, 381-5: Native methods, 

 8, 380: Population transfer, 438; On 

 European estates, 140, 404, 405; Sur- 

 veys of, 16, 1 40 



Soil-maps, 52, 128, 129 & n., 132, 133, 

 136, 161 



