objections have been raised to the low-frequency limit, 

 because observations of what are claimed to be free inter- 

 nal waves had been made at higher latitude than the theory 

 would permit. 



Increasing awareness of the importance of internal 

 waves in naval operations is apparent among Navy scientists, 

 but it can be developed among the masters of vessels and 

 equipment only through proper instruction. Because 

 present-day knowledge of internal waves is stored in print 

 in so many widely scattered publications, a comprehensive 

 bibliography on internal waves is considered an important 

 bridge to more comprehensive naval research, development, 

 and teaching for Fleet use. 



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