30 FORESTRY OF WEST AFRICA. 



II. 

 In the Preface to his 'Flora of Tropical Africa,' 

 1868, Professor Oliver (from whom I take the liberty 

 to quote) has deemed it expedient to divide Western 

 Tropical Africa into two principal geographical 

 regions, viz. : — 



1. Upper Guinea, including under this term the 

 Western Coast Region from the River Senegal on 

 the north to Cape Lopez immediately south from 

 the equator ; the interior drained by rivers interme- 

 diate between these limits and the small islands of 

 the Gulf of Guinea, Fernando Po, Prince's Island, St. 

 Thomas and Annabon. 



2. Lower Guinea, Western Tropical Africa from 

 Cape Lopez southward to the Tropic of Capricorn, 

 including Congo, Angola, Benguela, and Mossamedes. 



The collections — I get my information from the 

 above-quoted Preface — of botanical specimens received 

 from time to time from the first Region, together with 

 many from Sierra Leone, Fernando Po, and Accra, 

 and other points on which is based the information 

 as to Upper Guinea, were : — 



I. The plants collected by Dr. Theodore Vogel 

 and his assistant, Mr. Ansell, on the Niger Expedi- 



