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CHARTS. 



PAGE 



Plate 1. — The Northern and Southern Hemispheres, with Track of H.M.S. 



"Challenger," . . . . . .11 



Plate 2. — Contour-Chart of the Bottom of the Ocean, . . . 14 



Plate 3. — Contour-Chart of the Bottom of the Atlantic, . . • 1 7 



Plate 4. — Surface-Currents and Surface-Temperatures, . . 27 



Plate 4a. — Lines of Equal Barometric Pressure (Isobars) for July, August, 



September, . . . . . . .46 



Plate 5. — Current Chart of the Ocean, . . . . . 53 



OCEANIC SECTIONS. 



Approximate Section through the Atlantic, . . Frontispiece. 



Plate 6. — From Teneriife to Sombrero, .... 



Plate 7. — From St. Thomas to Halifax, .... 



Plate 8. — From Cape May to Madeira, .... 



Plate 9. — From Madeira to Tristan d'Acunha, 



Plate 10. — From Cape Palmas to Cape S. Roque and Tristan d'Acunha, 



Plate 11. — From the Falkland Islands to the Cape of Good Hope, 



Plate 12. — From the Cape of Good Hope to Cape Otway, 



Plate 13. — From Lat. 50° S. to the Antarctic Circle, 



Plate 14. — From Port Jackson to Cook Strait and the Friendly Islands, 



Plate 15. — From the Fiji Islands to Torres Strait, 



Plate 16. — From Torres Strait to Hong-kong and to the Admiralty Islands, 



Plate 17. — From the Admiralty Islands to Japan, . ... 



Plate 18. — From Yokohama to Station 253, . 



Plate 19.— From Station 253 to Station 288, 



Plate 20.— From Station 288 to the Coast of Chile, . 



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no 



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