(25) Jacobson, A. W. , 1948. An Instrument for Recording Continuously 

 the Salinity, Temperature, and Depth of Sea Water. Transactions 

 of the American Institute of Electrical Engineering , Vol 67, Part 

 1, 714-22. 



(26) M. Greenspan, G. E. Tschiegg, (NBS) 1963: A Sing Around Velocimeter 

 for Measuring the Speed of Sound in the Sea. Underwater Acoustics. 

 Lecture 5: p. 87. Plenum Press. 



(27) J. R. Lovett, S. H. Sessions: An Instrument for Continuous Deep 

 Sea Measuring of Velocity of Sound, Temperature, and Pressure. 

 (NOTS) Navweps Report 7650. 



(28) F. J. Suellentrop, A. E. Brown, Eric Rule, 19.61: An Instrument 

 for the Direct Measurement of the Speed of Sound in the Ocean. 

 Marine Sciences Instrumentation. Vol I: 186. Plenum Press. 



(29) R. A. Stahl, R. L. Miller (Teledynamics) , 1965: The Aquasonde. 

 Marine Sciences Instrumentation. Vol III: Plenum Press. 



(30) Proposal by Dyna Empire, Inc., to U.S. Naval Oceanographic Office, 

 and Report by U.S. Naval Oceanographic Office to the Bureau of 

 Ships of January 7, 1965. 



(31) Arthur D. Little, Inc., Invention Record. Index No. 2587. 1966. 

 Expendable Sound Velocimeter, and supporting memoranda. 



(32) Instrumentation Fact-sheets. U.S. Naval Oceanographic Office, 

 Instrumentation Department, Code 6110, Washington. 



(33) M. Greenspan, C. E. Tschiegg (NBS), 1959: Tables of the Speed 

 of Sound in Water. J.A.S.A. 31:75 



(34) Frank K. Brown, 1953: The Development of an Underwater Sound 

 Velocity Meter Using a Cylindrical Resonator. University of 

 Michigan Thesis. 



(35) John D. Shaffer, 1960: Low Frequency Underwater Sound Velocity 

 Meter. RSI 31: 1319. 



55 



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