A HIST R Y 



BRITISH 



FRESHWATER ALGtE, 



INCLUDING DESCRIPTIONS OF 



THE DESMIDE./E AND MATOMACE/E. 



UPWARDS OF ONE HUNDRED PLATES, 



ILLUSTRATING THE VARIOUS SPECIES. 



ARTHUR HILL HASSALL, 



FELLOW OF THE LINNJEAN SOCIETY* ; 

 MEMBER OF THE ROYAL COLLEGE OF SURGEONS, LONDON. AND OF THE t.( 

 BOTANICAL SOCIETY J AND CORRESPONDING MEMBER OF THE DUBLIN 

 NATURAL HISTORY SOCIETY. 



IN TWO VOLUMES, 



VOL. II. 



LONDON: 



S. HIGHLEY, 32. FLEET STREET; 



AND H. BAILLIERE, 219. REGENT STREET. 



EDINBURGH: SUTHERLAND & KNOX, 58. PRINCE'S STREET. 



PARIS : .1. B. BAILLIERE. LEIPSIG : -T. O. WEIGEL. 



1845. 



