FRESH WATER ALG/E 



PLATE 



^ 





I 



/ « 



s 1 





o *^ 



■'4 5 a 



ij 





,.4J>. 



5"b 



3 @ 



AFTEP MATURE BVOR H CWOOD 



Fig. 1. SCENEDESMUS POLYMORPHUS. 

 • 2. SCENEDESMUS QUADRICAUOA. 



Fig, 3. SCENEDESMUS ROTUNOATUS 

 - 4. PALMOGLOEA CLEPSYDRA, 

 '■ 5. COSMARIUM ACEROSUM, 



< S'NCLfttR aSOH PHlLftOEL 



Fig. 6, COSMARIUM AREOLATUM, 

 '■ 7. COSMARIUM "ENUS, 



