The Sonoprobe provides a ready means of determining facies changes , and 

 when combined with a bottom sampling program, it can provide meaningful data 

 over a large area with a minimum of bottom samples. The Sonoprobe was used to 

 a limited degree in the Penobscot Bay survey to determine the type of bottom 

 sampler to use at many of the stations. Used to its fullest extent, the number of 

 bottom samples could have been reduced to a fraction of those obtained. 



Members of the survey party were Mr. R. L. Cory, Party Chief, Mr. John 

 R. DePalma, Mr. A. P. Franceschetti, and the author. 



I wish to acknowledge the assistance of the following persons: 



Mr. Meyer Rubin of the Radio Carbon Laboratory of the U.S. Geological 

 Survey for the analysis of the wood sample . 



Mr. R. L. Cory, Party Chief of the Penobscot Bay Survey, who was re- 

 sponsible for the excellent cores, grab samples, and subbottom records used 

 in this report . 



And my colleagues of the Oceanographic Branch of the U.S. Naval 

 Oceanographic Office for their critical review of the manuscript of this 

 report . 



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