W 9D CO 30 30 E 



\N 50" CO" 30" O" 30° E 



W 60' 30 30 E 



W 60 30 30 E 



Plate 7. Average density (o,) in the Atlantic Ocean. 



(Picture to the left: in 400 m depth; picture to the right: in 1000 n\ depth.) 



(For sca-surfacc sec: Vol. I. Pt. I. Fig. 89, p. 191, for deolh charts p. 192). 



