HOW TO KNOW THE SEAWEEDS 



and Red Algae together, separating them from each other without par- 

 ticular regard to color. 



c= 



m 



^ 



B 



Fig. 5. Some examples of Blue-Green Algae. 

 A Lvngb/a sp. X 183. B. Oscillatoria sp., X 200. C. Brachytrichia sp., X 275. 

 D. Hormothamnion sp., X 330. E. Entophysalis sp., X 500. F. Calothnx sp., X 275. 



