A MONOGRAPH 



OF THE 



BKITISH DESMIDIACEJE 



BY 



W. WEST, F.L.S., 



Lecturer in Botany, Biology, and Bacteriology at the Technical 



College, Bradford 

 Ex-president of the Yorkshire Naturalists 1 Union; 



AND 



G. S. WEST, M.A., D.Sc, F.L.S., A.R.C.S., 



Lecturer in Botany at the University of Birmingham ; Formerly Professor 



of Natural History at the Royal Agricultural College, Cirencester ; 



and Scholar and Hutchinson Research Student of St. John's 



College, Cambridge 



VOLUME III 



LONDON 

 PRINTED FOR THE RAY SOCIETY 



1908 



