CONTENTS. XV 



Page 



82. Joints in the Core 368 



83. Testing Joints 370 



84. Self-heating of Cables 373 



85. To Find the Locality of a Fault with both Ends .... 377 



86. Eupture of Conductor . 379 



87. De Sauty's Method of Finding Locality of Eupture . . 379 



88. Varley's ,, ,, ,, ,, . . 381 



89. Final Tests of Complete Cable 383 



90. Insulating Materials 384 



91. Absorption of Water by Insulating Materials 386 



92. Siemens' Cables 387 



93. The Cable in the Ship Paying-out Apparatus .... 388 



94. Paying-out Taking Bearings 391 



95. Soundings 391 



96. Diagrams of the Bottom 392 



97. Cable Descending to the Bottom 393 



98. The Break 396 



99. The Dynamometer 398 



100. Electrical Operations during Paying -out 399 



101. Determination of Place of Fault in Insulator .... 404 



102. End Operations 408 



103. Hipp's Method of Sealing Faults 408 



104* Charge and Distribution along the Line 410 



105. Inductive Capacity of Materials . . ., . . ... . 411 



106. "Wippe," or Self-acting Make-and-Break 415 



107. Eate of Working through Cables 419 



