PBEFACE. 



6. Mozambique Distbict. Under this general term are included, 

 not only Mozambique proper, but Zanzibar, Zambesi-land, and the coast 

 region southward to the tropic. 



The more important collections contained in the Kew Herbarium 

 from Uppeb Guinea are the following ; — 



1. The plants collected by Dr. Theodore Yogel and his assistant 

 Mr. Ansell, on the Niger Expedition, organized by the African Civiliza- 

 tion Society, in 1841, and which formed the basis of the ' Flora Nigri- 

 tiana ' of Dr. Hooker and Mr. Bentham, published in 1849. Besides 

 the numerous specimens collected on the banks of the Niger itself, 

 this collection includes many from Sierra Leone, Fernando Po, Accra, 

 and other points touched at by the expedition. These, of course, have 

 been already published in the work referred to. 



2. The very large collections made by Mr. Charles Barter, attached 

 to the Niger Expedition under Dr. Baikie, in 1857, 1858, and 

 1850, together with some specimens, sent home by Dr. Baikie himself. 



3. The yet more important collections, made by Mr. Gustav Mann, 

 under the auspices of the Admiralty, in Fernando Po, St. Thomas and 

 Prince's Islands, Old Calabar, Camaroons mountains, Corisco Bay, 

 Kivers Muni and Gaboon, and the Sierra del Crystal. 



4. Collections made, chiefly in the neighbourhood of Abbeokuta, by 

 the late Dr. Irving. 



5. A collection from Old Calabar and neighbourhood, made by the 

 Eev. W. C. Thomson, and transmitted to Kew by Professor Balfour. 

 Besides the above, the Kew Herbarium contains valuable sets from 

 Senegambia, collected by Heudelot and Leprieur, communicated to Sir 

 W. J. Hooker by M. B. Delessert, through his curator, M. Guillemin ; 

 and a few collected by M. Bidjem, communicated by Count Franqueville ; 

 aud from Sierra Leone, collected by Don, Whitfield, Miss Turner, and 

 others. 



Eeference has also been, made to the specimens contained in the 

 Herbarium of the British Museum, collected by Afzelius, Smeath- 

 maun, Dr. Daniell, and others, at Sierra Leone, and by Leprieur and 

 Perrottet in Senegambia. 



