Contents (cont.) Page 



William C. Schroeder: Report on ihe results of exploratory otter-trawling 

 along the continental shelf and slope between Nova Scotia and Virginia during 

 the summers of 1952 and 1953 358 



Georg WiJST : Stromgeschwindigkeiten im Tiefen- und Bodenwasser des 

 Atlantischen Ozeans auf Grund dynamischer der Meteor- Profile der 

 Deutschen Atlantischen Expedition 1925 27 373 



Wm. C. Herrington : U.S. participation in conservation of international 

 fishery resources 398 



Donald R. Griffin; Hearing and acoustic orientation in marine animals 406 



Anton Fr. Bruun and A. Kiilerich: Characteristics of the water-masses of 



the Philippine, Kermadec, and Tonga Trenches 413 



Talbot H. Waterman: Polarization of scattered sunlight in deep water 426 



Walter Hansen : Elevation of sea level caused by wind in a rectangular 

 channel 435 



A. Vedel Taning: On the breeding areas of the Swordfish {Xiphias) 438 



W. T. Edmonson: Factors effecting productivity in fertilized salt water 451 



A. Defant: Die Ausbreitung des Mittelmeerwassers in Nordatlantischen Ozean 465 



Lionel A. Walford: New directions in fishery research 471 



C. O'D. Iselin: Coastal currents and the fisheries 474 



Trygve Braarud: Electron microscopy in oceanographic research 479 



John B. Tait: Long-term trends and changes in the hydrography oi the 

 Faroe-Shetland Channel region . 48- 



IX 



