Submarine Telegraphs : Their History, Construction, and Working (Paperback)

Preface; Introduction; Part I. The History of Submarine Telegraphs: 1. Early subaqueous telegraphy; 2. The dawn of ocean telegraphy; 3. Developments; 4. Commercial and miscellaneous resume; Appendices; Part II. The Construction of Submarine Telegraphs: 1. The conductor; 2. The insulating envelope; 3. Joining; 4. Mechanical protection and strength; 5. Completed cable; Appendices; Part III. The Working of Submarine Telegraphs: 1. Theory of the transmission of signals through cables; 2. Signalling apparatus; 3. Duplex telegraphy; 4. Automatic machine transmission; 5. Recent developments; Appendix; Index.