Plate I. 



33 







^ 



r ¥ Hw^ffi^. ■ %ir 



Fig. 9. Peridinian Plankton, consisting 

 mainly of Ceratium tripos. 



Fig. 10. Plankton, consisting almost 

 wholly of Noctiluca miliaris. 



Ef/'wr *£"*v r >* "V 7 ^*"? -'"^"T^- ~^v "*»*•% 



#*v. 



^%s 









Fig. II. Copepod Plankton, consisting mainly 

 of Acartia discaudata. One Temora is seen. 



Fig. 12. Diatom Plankton, consisting 

 mainly of Coscinodiscus and Biddulphia. 



