X CONTENTS 



///. The Deep Sea 



Geochemistry and Physics of Ocean Circulation, by \V. S. 

 Broecker, R. D. Gerard, M. Ewing, and B. C. 

 Heezen 301 



Certain Quantitative Characteristics of the Pelagic and 



Bottom Life of the Ocean, by L. A. Zenkevitch 323 



Turbulent Transport, by W. V. R. Malkus 337 



Pelagic Sediments, by ]\I. N, Bramlette 345 



Geochemistry of Radioactive Elements in the Ocean and 

 the Chronology of Deep-Sea Sediments, by Edgard 

 E. PicciOTTO 367 



Abyssal Benthic Organisms: Nature, Origin, Distribution, 

 and Influence on Sedimentation, by Anton F. Bruun 

 and ToRBEN Wolff 391 



IV. Boundaries of the Sea 



Coupling between Sea and Air, by Pierre Welander 401 



The Exchange of Matter between Atmosphere and Sea, by 



Erik Eriksson 411 



An Estuarine Model of the Sub-Arctic Pacific Ocean, by 



J. P. TuLLY and F. G. Barber 425 



Length of Pelagic Life in Marine Bottom Invertebrates as 

 Related to Larval Transport by Ocean Currents, by 

 Gunnar Thorson 455 



Problems of Epicontinental Sedimentation, by P. H. 



KUENEN 475 



