FOREWORD 



Here is presented the twenty-eighth bulletin in the series entitled 

 "International Ice Observation and Ice Patrol Service in the North 

 Atlantic." The series comprises, mainly, the annual report of the 

 activities of the Ice Patrol Force during each season with occasional 

 treatises on ice, its sources, distribution, and ultimate destruction; 

 and also physical oceanography, the study of the currents, surface 

 and subsurface, which largely govern the ice movement. Naturally 

 no single one of these reports could cover the whole field or solve 

 all the many problems concerning ice patrol, nor has this been at- 

 tempted. If the reader is interested in the history, organization, 

 and development of this service durmg its 25 years of existence he is 

 referred to previous bulletins of this series. 



The section of this report entitled "Oceanography" was prepared 

 by Senior Physical Oceanographer Floyd M. Soule, United States 

 Coast Guard. The other sections of the report were prepared by 

 Lt. G. Van A. Graves, United States Coast Guard- Ice-observation 

 officer. 



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