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LIST OF ILLUSTRATIOxXS. 



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To Face Pagb 



1. Chart showing the Depth of the North Atlantic Ocean, with Routes 



of Submarine Telegraph Cables Frontispiece. 



2. Diagrams of Normal Height of the Barometer, in Spring, Summer, 



Autumn, and Winter 109 



3. Barometrical and Wind Chart of the British Isles, illustrating simul- 



taneous Observations 120 



4. Chart showing the Winds and Calms of the North Atlantic Ocean 125 



5. Diagram illustrating the Direction of the N.E. Trade Wind 133 



6. „ „ II M Anti-Trades or Passage Winds 171 



7. Diagrams of Four Years Wind Observations at Liverpool 203 



3. Chart of the Courses of Various Hurricanes 217 



9. Storm Card, and Diagrams showing Normal Hurricane Track 225 



10. Chart showing the Currents of the North Atlantic Ocean 295 



11. Chart showing the Tracks of notable Derelicts, Bottles, &c 297 



12. Ice Signals for the Vicinity of the Newfoundland Banks 448 



13. Chart showing the Magnetic Variation and Dipt in 1017 455 



14. Great Circle Track Chart of the North Atlantic Ocean 459 



15. Charts illustrating the Best Routes over the North Atlantic Ocean, 



and Across the Equator 475 



16. The Meteorology of Square No. 3 (0°— 10° N., 20°— 30° W.), with Best 



Routes Across the Equator 481 



