36 HISTORY OF THE OCEANS 



Gutenberg, B., and C. F. Richter. 1949. Seismicity of the Earth. Princeton 



University Press, Princeton, N.J. 

 Heck, N. H. 1938. The role of earthquakes and the seismic method in 



submarine geolog}'. Proc. Am. Phil. Soc, 79, 97-108. 

 Heezen, B. C, and M. Ewing. 1952. Turbidity currents and submarine 



slumps, and the 1929 Grand Banks earthquake; Am. J. Set., 250, 



849-873. 

 Heezen, B. C., M. Tharp, and M. Ewing. 1959. The floors of the oceans. 



I. The North Atlantic. Geol. Soc. Am. Spec. Papers No. 65. 

 Heiskanen, W. A., and F. A. Vening Meinesz. 1958. The Earth and 



Its Gravity Field. McGraw-Hill, New York. 

 Hennion, J., and J. I. Ewing. Seismic refraction measurements in the 



southeastern Caribbean Sea. (In preparation.) 

 Hess, H. H. 1959. The AMSOC hole to the earth's mantle. Trans. Am. 



Geophys. Union, 40, 340-345. 

 Jeffreys, H. 1958. The times of P up to 30°. Geophys. J., 1, 154-161. 

 Katz, S. 1955. Seismic study of crustal structure in Pennsylvania and 



New York; Bull, Seismol. Soc. Am., 45, 303-325. 

 Koppen, W., and A. Wegener. 1924. Die Klimate der geologischen Vorzeit. 



Gebruder Borntraeger, Berlin. 

 Landisman, M., and Y. Sato. 1958. Shear wave velocities in the upper 



mantle. Trans. Am. Geophys. Union, 39, 522. 

 Landisman, M,, Y. Sato, and M. Ewing. 1959. Surface wave dispersion 



in elastic media having gradients in their physical properties. /. 



Geophys. Research, 64, 1113. 

 Lehmann, I. 1934. Transmission time for seismic waves for epicentral 



distances around 20°. Geodaet. Inst. Kov. Denn. Meddelelse, 5, 45 pp. 

 . 1952. P and 5 at distances smaller than 25°. Trans. Am. Geophys. 



Union, 33, 316. 

 . 1954. The velocity of P and 5 waves in the upper part of the 



earth's mantle. Extrait des Publications du Bureau Central Seis- 



mologique International, Ser. A. Travaux Scientifiques, Fasicule 19. 



Presentes a I'Assemblee de Rome, 1954. 

 . 1955. The times of P and 5 in Northeastern America. Ann. 



geofis. (Rome), 8, 351-370. 

 . 1959. Velocities of longitudinal waves in the upper part of the 



earth's mantle. Ann. geophys. 15, 93-118. 

 -. 1960. Pand 5 wave velocities in the upper mantle. Nature, 186, 956. 



Lubimova, H. A. 1958. Thermal history of the earth with consideration 

 of the variable thermal conductivity of its mantle. Geophys. J., 1, 

 115-134. 



Maxwell, A. E., and R. von Herzen. 1959. Heat flow through the Pacific 

 Basin. Preprints International Oceanographic Congress, pp. 39-40. 



