NOTES 169 



fisk-Biologiska Kommissioiiens Skrifter, 3d ser. (Hydro- 

 graphy), 1, No. 2 (1945), 46 pp. 

 9. H. Pettersson, "The Swedish Deep-Sea Expedition 1947- 

 48," Deep-Sea Research, 1 (1953), 17-24. 



10. M. Ewing, "Exploring the Mid- Atlantic Ridge," The Na- 

 tional Geographic Magazine, 94 (1948), 275-94. 



11. I. Tolstoy and M. Ewing, "North Atlantic Hydrography 

 and the Mid- Atlantic Ridge," Bull. Geol. Soc. Am., 60 

 (1949), 1527-40. 



12. F. B. Phleger, Frances L. Parker, and Jean F. Peirson, 

 North Atlantic Foraminifera, Fascicle I of Sediment Cores 

 from the North Atlantic Ocean, Reports, 7 (1953). 



13. "Discovery" Reports, Cambridge, the University Press, 

 1929-47. 



Chapter 4. The Sediment Carpet and 

 the Substratum 



1. Ph. H. Kuenen, "Rate and Mass of Deep-Sea Sedimenta- 

 tion," Am. Journ. Sc, 244 (1946), 563-72; "Geochemical 

 Calculations concerning the Total Mass of Sediments in 

 the Earth," Am. Journ. Sc, 239 (1941), 161-91. 



2. W. Weibull, "The Thickness of Ocean Sediments Meas- 

 ured by a Reflexion Method," Medd. Oc. Inst., 12 (1947), 

 17 pp. 



3. M. Ewing, A. P. Crary, and H. M. Rutherford, "Geophysi- 

 cal Investigations in the Emerged and Submerged Atlantic 

 Coastal Plain," Bull. Geol. Soc. Am., 48 (1937), 753-801. 



4. E. C. Bullard and T. F. Gaskell, "Submarine Seismic In- 

 vestigations," Proceedings of the Royal Society of Lon- 

 don, Ser. A, 177 (1941), 476-99. 



5. B. Gutenberg, "Crustal Layers of the Continents and 

 Oceans," Bull. Geol. Soc. Am., 62 (1951), 427-39. 



