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PACIFIC SCIENCE, Vol. XIX, July 1965 
ing of the crust on both sides of the Hawaiian 
Rise as the island platform of the Ridge was 
built up. 
ACKNOWLEDGMENTS 
The work reported here was carried out 
under Contract ONR 3748(05) with the Office 
of Naval Research. 
This paper represents a cooperative effort 
on the part of Hawaii Institute of Geophysics 
personnel In particular, thanks are due Mr. 
William Strange and Mr. L. Machesky for 
their assistance on shipboard and with inter- 
pretation of the data. The author is also grate- 
ful to Captain Roy Coe and the crew of the 
R/V "Neptune” for their cooperation and help 
during the explosives operation. Finally, the 
valuable support and encouragement furnished 
by Dr. G. P. Woollard can never be fully 
acknowledged. 
REFERENCES 
Ewing, J. L, and G. B. Tirey. 1961. Seismic 
profiler. J. Geoph. Res. 66(9) : 2917-2927. 
Menard, H. W., E. C Allison, and J. W. 
Durham. 1962. A drowned Miocene terrace 
in the Hawaiian Islands. Science 138:896- 
897. 
Shoe, George G., Jr., and Dwight D. Pol 
lard. 1964. Mohole site selection studies 
north of Maui. J. Geoph. Res. 69(8): 1627- 
1637. 
