Ramsbottom, Dr. J., o.b.e. 



Rendle, Dr. a. B., f.r.s. 



Richards, Dr. Audrey I. 

 Richards, F. S. 

 Richards, Dr. P. W. 

 Rigotard, Monsieur M. 

 Riley, Dr. N. D. 



Robert, Monsieur M. 



Roberts, Austin 



RoBYNS, Dr. W. 



Rodhain, Professor J. 



Russell, Sir E. John, f.r.s. 



Russell, Dr. E. S., o.b.e. 

 Salisbury, Professor E. J., f.r.s. 

 Sampson, Dr. H. C, c.i.e. 



Sandford, Dr. K. S. 

 Schouteden, Dr. H. 



Scott, Dr. H. H. 



Seligman, Professor C. G. 



Sequeira, Dr. J. H. 

 Sheehy, E. J. 



Shortridge, Capt. G. C. 



Simpson, Sir George, k.c.b., 

 C.B.E., f.r.s. 



Smith, The Rev. Edwin 



SoREL, Monsieur 



Stamp, Professor L. D. 

 Stanton, Sir A. Thomas, k.c.m.g. 



Stapledon, Professor R. G., 



C.B.E., F.R.S. 



Stockdale, Sir Frank, c.m.g., 



C.B.E. 



LIST OF AUTHORITIES 62 1 



Chapters 

 Keeper of Botany, British Museum VI 



(Natural History) 



Formerly Keeper of Botany, British VI 



Museum (Natural History) 



University of the Witwatersrand XVIII 



Survey of Egypt II 



Botany School, Cambridge V-VII 



Algeria V 



Keeper of Entomology, British VIII, X 



Museum (Natural History) 



Comit6 Special du Katanga, 1 1 -IV 



Bruxelles 



Senior Assistant, Transvaal Museum, VIII 



Pretoria 



Directeur, Jardin Botanique de VI, VII, 



I'fitat, Bruxelles XI-XIII 



Directeur de ITnstitut de Medecine XV-XVII 

 Tropicale Prince Leopold 



Director, Rothamsted Experimen- V, XI -XIV 

 tal Station 



Ministry of Agriculture and Fisheries IX 



University College, London V, VI 



Economic Botanist, Royal Botanic V-VII, 



Gardens, Kew XI -XIV 



School of Geography, Oxford II, III 



Directeur, Musee du Congo Beige, VIII 



Tervueren 



Director, Bureau of Hygiene and XV-XVII 

 Tropical Diseases 



Formerly of the London School of XVIII 



Economics 



Kenya XV-XVII 



Animal Nutrition Department, XIV 



Albert Agricultural College, Glas- 

 nevin, Dublin 



Director, Kaffrarian Museum, King VIII 



William's Town^ South Africa 



Formerly Director, Meteorological IV 



Office 



Royal Anthropological Institute XVIII 



M^decin Inspecteur-General du XV-XVII 

 Service de Sante Publique des 

 Colonies, Paris 



London School of Economics II-V 



Formerly Chief Medical Adviser to XV-XVII 

 the Secretary of State for the Colonies 



Director, Welsh Plant Breeding Sta- VI 



tion, Aberystwyth 



Agricultural Adviser to the Secre- V-VI, 



tary of State for the Colonies XI -XIV 



