FRESH WATER ALG/€ 



PLATE <X 



AFTCR NATURE BY DB H, C- WOOD. 



F.?. I. STIGEOCLONIUM 

 ■■ i ARTHRODESMUS ijUAORIDENS, 



Fig 3. VAUCHERIA POLYMORPHA 

 " 4. LEMANEA TORULOSA. 



Fig, ^ eUASTRUM MULTILOBATUM 

 " 6. PENIUM DIGITUS. 



