LIST OF ILLUSTRATIONS 



PLATES 



PLATE PAGE 



1. Norwegian Sea, observation of temperature and salinity at 500 meters 11 



2. Norwegian Sea, observations of temperature and salinity at 1000 meters 11 



3. Norwegian Sea, observations of temperature and salinity at 2000 meters 11 



4. Atlantic Ocean, temperature, salinity, and density at standard depths, depths 200-1000 meters. . . 



5. Atlantic Ocean, temperature, salinity, and density at standard depths, depths 1250-2000 meters. . 



6. Atlantic Ocean, temperature, salinity, and density at standard depths, depths 2500-4000 meters. . . 18 



7. Atlantic Ocean, temperature, salinity, and density at standard depths, depths 4500-5000 meters. . . 



8. Stations occupied by Discovery II in the South Atlantic and South Pacific, 1933-1935 



9. Mediterranean Sea, serial sections of temperature and salinity 20 



10. Adriatic Sea, serial sections of temperature and salinity 20 



1 1 . Gulf of Mexico and Caribbean Sea, serial sections of temperature and salinity 21 



12. Pacific Ocean, general chart, serial sections of temperature and salinity 26 



13. Japanese Islands to East Indies, serial sections of temperature and salinity 26 



14. A. Oceanic areas adjacent to the Aleutian Islands, serial sections of temperature and salinity. ... 26 

 B. Gulf of Alaska to San Francisco, serial sections of temperature and salinitj^ 26 



15. Off coast of southern California, serial sections of temperature and salinity 26 



16. Off coasts of Costa Rica, Panama, and northern South America, serial sections of temperature 



and salinity 26 



17. Red Sea. serial sections of temperature and salinity 27 



18. Indian Ocean, general chart, serial sections of temperature and salinity 28 



19. Atlantic Ocean, northern part, sounded and unsounded areas 34 



20. Atlantic Ocean, southern part, sounded and unsounded areas 34 



21. Pacific Ocean, northern part, sounded and unsounded areas 34 



22. Pacific Ocean, southern part, sounded and unsounded areas 34 



23. Indian Ocean, sounded and unsounded areas 34 



24. Atlantic Ocean, earthquake epicenters 44 



25. Pacific Ocean, earthquake epicenters 44 



26. Indian Ocean, earthquake epicenters 44 



27. Seismological stations of the world 48 



28. Tracks of chief vessels on which magnetic observations were made in the Atlantic Ocean, 1839- 



1916 56 



29. Tracks of chief vessels on which magnetic observations were made in the Pacific Ocean, 1839- 



1916 56 



30. World magnetic and electric survey. Department of Terrestrial Magnetism, Carnegie Institution 



of Washington, 1905-1937 56 



31. Tidal stations, Atlantic and Indian oceans and connecting waters 58 



32. Tidal stations, Pacific Ocean and connecting waters 58 



33. Gravimetric map of the East Indian Archipelago 66 



34. A. Gravimetric survey of the Gulf of Mexico and the Caribbean Sea on U. S. Naval submarines 



S-21 and S-48 66 



B. Route around the world of the Dutch submarine K-XIII and the gravimetric stations oc- 

 cupied 66 



35. Gravity surveys by the Japanese Geodetic Commission since 1932 70 



36. The gravity-expedition of Hr. Ms. .submarine 016 in the north Atlantic, January 11-March 16, 



1937 70 



