74 



DISCOVERY REPORTS 



JO 3+' 



Fig. 38. Contour chart showing the total quantity of phytoplankton in the South Georgia December- 

 January 1926-7 survey measured as numbers of cells per haul with the N 50 V net from 100 m. to the surface. 

 (See section on significance of phytoplankton numbers on p. 40.) 



Fig. -XQ. Chart showing the average phosphate content from 50 m. to the surface at stations in the South 



Georgia December-January 1926-7 plankton survey expressed as mg. per cu.m. Areas of values above 

 90 mg. per cu.m. are shaded. The main surface water movements are shown by arrows (cf. Fig. 6). 



