AT DEPTH OF 1000 FATHOMS = 36°-5 
Oceanic CircuLation. Map 12. 
40 30 30 10 0 10 20 30 40 50 60 70 80 90 100 HO 120 130 140 150 160 
EXPLANATION OF COLOURING 
Contours showing 
Height of land 
Contours showing 
Depth. a£ Sea 
6000 Feet/ 
SEA LEVEL 
n * sWwn tins 
Isothermals below Jiverage sJurwrv irvJBlu& thus , 
B artb-olomew, EdtuT 
