232 " BULLARD [chap. 11 



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Bur. Cent. Seism. Intern. Trav. Scl., Fasc. 19, 395-405. 

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 Nason, R. D. and W. H. K. Lee. 1962. Nature, 196, 975. 

 Ratcliffe, E. H., 1960. The thermal conductivity of ocean sediments. J. Geophys. Res., 65, 



1535-1541. 

 Reitzel, J., 1961. Some heat flow measurements in the North Atlantic. J. Geophys. Res., 



66, 2267-2268. 

 Revelle, R. and A. E. Maxwell, 1952. Heat flow through the floor of the Eastern North 



Pacific Ocean. Nature, 170, 199-200. 

 Uyeda, S., Y. Tomoda, K. Horai, H. Kanamori and H. Futi, 1961. Studies of the thermal 



state of the earth (VII). A sea bottom thermogradmeter. Bull. Earthq. Res. Inst., 



39, 115-131. 

 Uyeda, S., K. Horai, M. Yasni and H. Akamatsu, 1962. Heat flow measurements over the 



Japan Trench. J. Geophys. Res., 67, 1186-1188. 

 Von Herzen, R., 1959. Heat flow values from the Southeastern Pacific. Nature, 183, 



882-883. 

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York. 



Note added in Proof 



A very large number of measurements has been made recently in the Pacific ; 

 papers by Von Herzen, Von Herzen and Uyeda, and by Northrop, Rhea and 

 Von Herzen are in press. W. H. K. Lee has collected all available information 

 for 587 oceanic stations all over the world. He gets a mode of 1.1 [acal/cm^sec and 

 a mean of 1.6 ; the mean is too large owing to over-representation in the sample 

 of the crests of the mid-ocean ridges. The mean away from the ridges is prob- 

 ably near 1.1 [j-cal/cm^sec. The modes and the means for the oceans and the 

 continents do not differ significantly. 



Measurements by Von Herzen in the Indian Ocean show a pattern similar to 

 that in the Atlantic and Pacific with high values on the crest of the Carlsberg 

 Ridge and in the Gulf of Aden. The latter may be compared with the high 

 values in the Gulf of California. 



A Russian measurement of 1.9 [jical/cm^sec in the Black Sea was published 

 by Sisoev, N. N., 1961, Okeanologiija, \, 886-887. 



