LIST OF ILLUSTEATIONS. 



VAor. 

 Ruins of the Temple of Hercules at Gibmltur Front /'xineea 



1. Mail's conquesfs of Nature ...... vli 



2. Brooke's deep-sea sounding apparatus .... 4 



3. Striking the sea-bottom ft 



4. Measuring the depth of the sea by means of a bonil) . 



5. Vertical section of tlie Atlantic from Yucatan (coao.t of 



Mexico) to Senegal 



10 



G. Section of the Atlantic Ocean from Paris to Newfoundland 23 



25 

 29 



7. Equatorial section of the (sarth .... 



.S. Chart of the depths of the Atlantic Ocean 



9. Chait of the respectivu deptlis of the Mediterranean, the 



Adriatic, and the Black Seas 33 



10. Depths of the Adriatic 36 



11. Profile of the ocean-floor from the southernmost point of 



Norway, rid the Straits of Dover, to the 10th degree of 

 west longitude and the 47th degree of north latitude . 39 



12. Vertical section of the Straits of Dover . . . .40 



13. Phosphorescent sea ut Simon's Town, Cape of Good Hope 57 



14. Incidence of the rays of lij^ht on a calm sea . .66 



15. Incidence of the rays of light on the waves of tlie sea . 67 



16. Rising of the sea at Acapulco . . . . .79 



17. Waves breaking against a rock-bound coast . . 90 



18. Rocks worn througli by the waves . . . . . !>3 



19. Section of the sea and the sea-bottom in the track of ico- 



lx>rg8 between firocn land au' I Newfamdland . . KM) 



h 



