10* PREFACE. 



also been at our service. Without the access to Dr. Welwitsch's Her- 

 barium, this region would have been comparatively a blank in the pre- 

 sent work. There remain but few Natural Orders treated of in the 

 first volume, of which we have not yet had the opportunity of inspect- 

 ing his specimens, and, of these, we may be able to embody the novel- 

 ties in an Appendix. To this distinguished naturalist I tender the 

 warmest thanks on behalf of my collaborators and myself. 



A set of plants, from the Congo, collected by Professor Christian 

 Smith, and a few gathered on the banks of the same river by Mr. Consul 

 Burton, are in the Kew Herbarium, also a small collection from Ele- 

 phants' Bay, made by Dr. Curror. 



SouTn Centbal : from this region we possess a few plants, collected 

 by Drs. Kirk and Meller on the Upper Zambesi,* and a small collection, 

 made under adverse circumstances, by Messrs. Baines and Chapman to- 

 wards the southern tropic and about Lake Ngami, in their adventurous 

 journey from Waalvisch Bay to the Upper Zambesi. 



From the Mozambique Distbict Kew possesses — 



The large collections from the Zambesi, its tributary the Shire, Lake 

 Nyassa, and adjacent country, made by Dr. John Kirk, the accomplished 

 naturalist and medical officer of the Livingstone Expedition, received in 

 1860-G2. These collections are accompanied by valuable notes and 

 drawings made upon the spot. From the same region we have also a 

 number of specimens, gathered by Dr. J. Meller, attached to the Church 

 of England Mission, associated with Dr. Livingstone's Second Expedi- 

 tion, and by Mr. Horace Waller. 



2. Plants, from the Bovuma river, collected by Drs. Kirk and Meller. 



3. A set of Dr. Peter's Zambesi and Mozambique plants, determined 

 by Dr. Klotzsch, communicated by the Eoyal Herbarium at Berlin, 

 from whence, also, we have been favoured with the loan of unique 

 specimens belonging to the same Herbarium. 



4. A few plants from Zanzibar, collected by M. Bojer, Captain Speke, 

 and Dr. Kirk, at present H.M. Vice-Consul at Zanzibar. 



* The bulk of the Upper Zambesi collections, made by Dr. Kirk, was unfortunately 

 lost. 



