A BIBLIOGRAPHY OF AFRICAN FRESHWATER ALGAE 
209 
exploration of Africa is so recent that the study of these is very 
little advanced, but a list of the publications which hâve so far 
appeared will be published later. The original publication has been 
consulted in every case, Miss Sims having done the bulk of this 
Work. We hâve used our best endeavours to see that this bibliogra- 
phy is free from error, but réalisé that this is more than we are 
. ib 
Fig. 1. Geographical Distribution of References to Freshwater Algae in Africa. 
(Figures indicate the niimber of papers referring to each territory or région). 
likely to hâve achieved. We should be grateful to hâve our atten¬ 
tion drawn to any omissions or errors so that, if necessary, a sup¬ 
plément can be issued. The titles of journals hâve been abbreviatcd 
as in the « World List of Scientific Periodicals » 3rd. édition, Lon¬ 
don, 1952. 
There are many people to whom our thanks are due, but we 
wish especially to acknowledge the generous assistance given us 
by Mr. M. Joliffe, Librarian of the University College of Khar- 
touin, Dr. J. W. G. Lund of the Freshwater Biological Association, 
