appeared. Mr. Charles Bright, F.R.S.E., has written valuable 

 works on the History, Construction, Laying and Working of 

 Submarine Cables, amongst which may be mentioned " Sub- 

 marine Telegraphs," " The Evolution of the Submarine 

 Telegraph," " The Story of the Atlantic Cable " and " The 

 Life Story of Sir Charles Tilston Bright," the latter written 

 conjointly with Mr. Edward Brailsford Bright, and con- 

 taining much information upon the pioneer stages of the 

 enterprise, particularly of the laying of the first Atlantic 

 and the first telegraph to India. Mr. Bright based 

 the first-named volume partly upon the valuable work of 

 Mons. E. Wiinschendorff in the French language, entitled 

 " Traite de Telegraphie Sous-Marine," well known and 

 appreciated as the first complete work on Submarine Tele- 

 graphy. 



Mr. J. Elton Young's able work, entitled " Electrical 

 Testing for Telegraph Engineers," is a most valuable addi- 

 tion on the subject of Electrical Testing and Localisation 

 of Faults. Also the very practical treatise by Messrs. 

 H. K. C. Fisher and J. C, H. Darby, entitled the " Students' 

 Guide to Submarine Cable Testing," has, by its clearness of 

 style and the experience the authors have brought to bear 

 upon their work, proved itself of great service. In this 

 special branch Mr. G. M. Baines " Beginners' Manual of 

 Submarine Cable Testing and Working," has proved a very 

 useful book and Mr. H. R. Kempe's " Handbook of Elec- 

 trical Testing " always remains as the standard work. 



Many valuable contributions to general knowledge on 

 the subject of Testing have appeared in the pages of 

 The Electrician and The Electvical Review, from the pen of 

 Dr. A. E. Kennelly, Mr. J. Elton Young, Mr. C. W. Schaefer, 

 the late Mr.W. J. Murphy, Mr. Arthur Dearlove, Mr. J. 

 Rymer-Jones, Mr. E. Raymond-Barker, Mr. H. E. Cann< 

 Mr. R. R. Black and other Authors, most of which I have 

 taken due notice of in the present revision. 



