Plate VII. 



Photomicrographs of Various Seaweeds. 



-A number of strands of Enteromorpha 

 X 70. 



Fig. 39. — Part of a plant of Cladophora, showing 

 the elongated cells, x 30. 



Fig. 40. — The diatom Schizonema in its mucilage 

 tubes. X 70. 



Fig. 41. — The brown seaweed Ectocarpiis, showing 

 a number of the reproductive organs. X 30. 



[Folding of Ships. 



