LIST OF ILLUSTHATIONS. 



53. Fixed apparatus, supplied with compr ssod ni 



54. Payerae's submarine LyJrratat 



55. Villeroy's submarine boat 



56. Kemoving an ol struction by means of a torpod* 



57. Section of a tin mine in Cornwall . 



58. Vertical section of tiie Straits of Gibraltar 



59. Irruption of the sea in Zealand 



60. Eruption of a submarine volcano . 



61. Submarine erupt on at tlie Azores . 



62. Rise of a new island near Ouniraack 



63. Eruption of Tomboro in 1821 



64. Paris covered by the sea 



65. A village buried under sand dunes 



66. Floating glaciers 



67. Telegraphic cable at th(.' boitom of the oct aL 



XIX 



I'Atik 



272 

 276 

 27<> 

 282 

 28;-) 

 300 

 303 

 309 

 31G 

 32(1 

 .323 

 335 

 374 

 377 

 '6U'^ 



