I'.i ii, ( . S. I!. ]'.. 1924. i Doc. 9680 







<m 



Q 



& 



iar* 



•St *S, 



**» : #\#: i* £ m - '• - - 

 ■ **mL. __._,^ 1 



ST "• 



-Phytoplankton near Seguin Island, March t, 1920 (station 20058), dominated by Lauderia glacialis, 

 Thalassiosira, Chsetoceras, Rhizosolenia, and Thalassiothrix nitschioides. (See list, p. 425.) 



Fig ll« Sample of a rich flowering of Thalassiosira from n surface haul ofl Penobscol Bay, Ma; 12, 1915 (si tion 



10276). X 150 



