Bull. U. S. B. F., 1924. (Doc. 968.) 
^ , V 
Fig. 123. — Diatom plankton in the western part of Georges Bank, July 9, 1913 (station 10059), dominated by 
Guivardia flaccida and Eucampia. (See list, p. 431.) 
Fig. 124. — Diatom plankton on the western part of Georges Bank, July 23, 1916 (station 10347), dominated by 
Thalassiothrix longissima and Rhizosolenia styliformis (see list p. 431). X 75 
