DISCOVERY REPORTS. VOL. VII 



PLATE IX 



10° N 



696 699 



LATITUDE 5 5g° 40° 30° 



STATION 663 666 668 671 ' 673 675 677 ' 679 



Fig. I. Section. Ill, distribution of pliosphate content (mg. PjOs/m.^). .^pril-May, 1931 



20° 



6SI 



684 



687 



20D0m 



3000m- 



4000 k, 



I 



Fig- 2. Section III, distribution of nitrate content (mg. nitrate-nitrite Nj/m.'). April-May, igjj 

 For position of Secliun III, see Fig. u, P- I9'- 



N 

 599 



