PREFACE, 
For the present volume of the “ Flora of Tropical Africa” I have been 
fortunate in securing the assistance of several contributors who had 
made a special study of the orders they have elaborated. 
It has been found impossible to include in it the Graminee, which 
will have to be deferred to the ninth and concluding volume. 
For the amended definition of the regions into which the area of 
the flora is divided, reference may be made to the preface to the 
seventh volume. 
In the prefaces to the first, fifth, and seventh volumes will be 
found an enumeration of the materials employed up to 1868, and of 
the most important additions to them which have reached Kew since. 
The only further collections at Kew cited in the present volume are 
I. Upper Guinea: 
Tt. N. Brown ‘ . Collection from the Gold Coast. 
J. H. Holland. . . A y » Nigeria 
W. Hi Joanson. . . ; », the Gold Coast. 
C. Punch . ‘ ‘ : “ », Lagos. 
VI. MozamBIQuE: 
Honourable Mrs. Evelyn Cecil . Collection from Rhodesia. 
Mrs. E. J. Lugard : : ‘ »  Ngamiland. 
It is intended to proceed at once with the printing of the fourth 
volume. This will contain the Apocynacee, the final elaboration of 
which has been delayed till the present in order to enumerate and 
