ILLUSTRATIONS XVll 



57. The adventure of the giant reef 145 



58. The aftermath of a hurricane 146 



59. The bathysphere changes to ultra-marine 147 

 ^o. Landing on the mother ship with the bathysphere 147 



61. The cables come out of their winter home 148 



62. The bathysphere on the ill-fated Freedom 148 



63. Inspection of the steel cable 148 



64. The cable tightly wound, ready for use 148 



65. The critical place of danger is the head of the boom 149 



66. The Freedom puts to sea 149 

 6j. The coils and coils of communication hose 149 



68. The door swung on for a test dive 149 



69. The sphere is lifted overboard 150 



70. The bathysphere appears at the surface 150 



71. Water spouts from the bathysphere window 151 



72. Something is seriously wrong with the sphere 151 



73. The compressed air sings along the wing-bolt's threads 152 



74. Soon the hissing rises to a high scream 152 



75. The wing-bolt shoots like a shell across the deck 153 



76. On the last test dive a clock is sent down 156 

 jj. At last the oxygen is passed in 156 



78. The oxygen valves are adjusted 157 



79. The quartz windows are as transparent as air 157 



80. Beebe and Barton in the bathysphere 158 



81. Last instructions 158 



82. White lead on the door 159 



83. The door is swung into place 159 



84. Each nut is twisted into its numbered place 160 



85. The noise of final hammering is terrific 160 

 %6. The bathysphere rises from the deck 161 



