VI FOEEWORD 



bodying conclusions and scientific results of many years of intense 

 specialized study and research. To broaden the scope of this work 

 and to o})tain data necessary for a complete analysis and exposition 

 of the iceberg situation and related subjects, the Marion expedition 

 was dispatched in the summer of 1928 to carry out an oceanographic 

 survey of the waters between Greenland and the North American 

 Continent, with especial reference to a study of ice conditions. The 

 observations made during this cruise, in addition to being helpful 

 to the completeness of the treatise on icebergs, have also been made 

 the subject of separate publications dealing with the bathymetry and 

 sediments, and with the physical oceanography of Davis Strait, 

 representing important contributions to the scientific knowledge of 

 this area. The results of this research work, and of years of study 

 and observations are being published in three parts under the title of 

 " The Marion Expedition to Davis Strait and Baffin Bay." 



These contributions to our knowledge of the iceberg problem mark 

 an epoch in the international Service of Ice Observation and Ice 

 Patrol, and great credit and praise are due the authors. Their work 

 presents a most comprehensive and valuable reference on the sub- 

 jects treated, and undoubtedly will form a foundation and a guide 

 for any future studies or research work which may be undertaken 

 along similar lines. 



F. C. BiLLARD, 



Rear Admiral, United States Coast Guard, 



Commandant, United States Coast Guard, 

 Chairman Interdepartmental Board on Interna- 

 tional Service of Ice Ohservation and Ice Patrol. 



