30 



32 



34° 36° 38° 40° 



NORTH LATITUDE 



42° 



44° 



Figure 42. --Vertical section of inorganic phosphate in microgram- 

 atoms per liter along 170 W. longitude; Charles H. G ilbert cruise 

 17, stations 14-18, September-November 1954. Contour interval 

 0.2 ug at. /I. 



45 



