4 W. B. TURNER, FRESH-WATER ALG^E OF EAST INDIA. 



In order that I might avoid prolixity and verbosity of description, of which I do 

 not approve, I have herein abbreviated my remarks as much as possible, except in the 

 (•ase of sundry extracts from Dr. Wallich's nnnnished (and to many inaccessible!) memoir 

 of 1860. The examination of Dr. Wallichs Mscr. has been attended with some difficulty, 

 from the fact of varying seales of nieasurement having been employed by him. I have 

 omitted Bibliographical list, as it seems to me a waste of space; a large number of -\vorks 

 and memoirs have, however, been consulted by me. 



I here take the opportunity of cordially thanking all my courteous helpers, espeeially 

 Dr. Wallich for his great kindness and valued letters; and I must tender my grateful 

 acknowledgement of assistance and kindly counsel received from my good friend Dr. Otto 

 Nordstedt, of Lund. 



Leeds, 25 Feb. 1892. 



