PREFACE. IX 



3. Nile Land. — The Nile Basin. It is bounded to the west by 

 the 2Gth meridian of East longitude ; to the east by the Red Sea and the 

 Indian Ocean; to the south by the Congo Free State and German 

 East Africa. 



4. Lower Guinea. — The Western Coast region from the southern 

 boundary of the Cameroons to the Tropic of Capricorn. It contains 

 the lower course of the Congo, and is bounded to the east by the 

 Congo Free State, the river Kwango, and the 20th meridian of East 

 longitude. 



5. South Central. — Comprises the Congo Free State, Lunda 

 and Portuguese West Africa, east of the 20th meridian of longitude 

 (Lobale). 



(I. Mozambique. — The East Coast from the northern boundary 

 of German East Africa to the Tropic of Capricorn. It includes Portu- 

 guese East Africa and British territories to the Tropic. 



In the preface to the first volume Professor Oliver enumerated the 

 materials which he had employed. These it is not necessary to re- 

 capitulate. Copious accessions have, however, reached Kew since 18G8, 

 and the more important of these are enumerated below. 



1. Upper Guinea. 



G. L. Bates. Plants of the Cameroons. 



Captain (afterwards Sir Richard) Burton and Commander 

 V. L. Cameron. A small collection from the Gold Coast. 



Surgeon-Captain H. A. Cummins. Plants collected during 

 the Ashanti Expedition of 1895-G. (See Kew Bulletin, 1898, 

 pp. 05-82.) 



G. F. Scott-Elliot. A large collection made during the 

 Anglo - French Sierra Leone Delimitation Commission of 

 1891-2. (See Journal Linnean Society, Botany, vol. xxx. pp. 

 64-100.) 



Professor A. Engler, Director of the Royal Botanical 

 Gardens and Museums, Berlin, has contributed the collections 

 of Braun, Preuss, Staudt and Zenker from the Cameroons. 



Dr. H. H. Johnston. A small collection from Sierra Leone. 



Sir H. H. Johnston, K.C.B. A collection from the 

 Cameroons. 



Dr. Brown Lester. Plants collected during the Anglo-French 

 Gambia Delimitation Commission, 1890-1. (See Kew Bulletin, 



1891, pp. 268-275.) 



H. Millen, Curator, Botanic Station, Lagos. (Kew Bulletin, 



1892, p. 72.) 



Alvan Millson, Assistant Colonial Secretary, Gold Coast. 

 Plants from Yoruba. (See Kew Bulletin, 1891, pp. 206-219. 

 Died 1896.) 



Sir Alfred Moloney, K.C.M.G., late Governor of Lagos. A 

 small collection of Lagos plants. 



Dr. Rowland, C.M.G., Chief Medical Officer, Lagos. Plants 

 chiefly collected during the Expedition undertaken by Sir 



