Preface to second edition Preface to first edition First Period - the Possible: 1. Professor C. A. Steinheil, 1838 2. Edward Davy, 1838 3. Professor Morse, 1842 4. James Bowman Lindsay, 1843 5. J. W. Wilkins, 1845 6. Dr. O'Shaughnessy, 1849 7. E. and H. Highton, 1852-1872 8. G. E. Dering, 1853 9. John Haworth, 1862 10. J. H. Mower, 1868 11. M. Bourbouze, 1870 12. Mahlon Loomis, 1872 Second Period - the Practicable: 1. Preliminary. Notice of the telephone in relation to wireless telegraphy 2. Professor John Trowbridge, 1880 3. Professor Graham Bell, 1882 4. Professor A. E. Dolbear, 1882 5. T. A. Edison, 1885 6. W. F. Melhuish, 1890 7. Charles A. Stevenson, 1892 8. Professor Erich Rathenau, 1894 Third Period - the Practical: Systems in actual use 1. Sir W. H. Preece's method 2. Willoughby Smith's method 3. G. Marconi's method Appendix A. The relation between electricity and light, before and after Hertz Appendix B. Prof. Henry on high tension electricity being confined to the surface of conducting bodies, with special reference to the proper construction of lightning-rods. On modern views with respect to the nature of electric currents Appendix C. Variations of conductivity under electrical influence Appendix D. Researches of Prof. D. E. Hughes, F. R. S., in electric waves and their application to wireless telegraphy, 1879-1886 Appendix E. Reprint of G. Marconi's patent Index.
Preface to second edition Preface to first edition First Period - the Possible: 1. Professor C. A. Steinheil, 1838 2. Edward Davy, 1838 3. Professor Morse, 1842 4. James Bowman Lindsay, 1843 5. J. W. Wilkins, 1845 6. Dr. O'Shaughnessy, 1849 7. E. and H. Highton, 1852-1872 8. G. E. Dering, 1853 9. John Haworth, 1862 10. J. H. Mower, 1868 11. M. Bourbouze, 1870 12. Mahlon Loomis, 1872 Second Period - the Practicable: 1. Preliminary. Notice of the telephone in relation to wireless telegraphy 2. Professor John Trowbridge, 1880 3. Professor Graham Bell, 1882 4. Professor A. E. Dolbear, 1882 5. T. A. Edison, 1885 6. W. F. Melhuish, 1890 7. Charles A. Stevenson, 1892 8. Professor Erich Rathenau, 1894 Third Period - the Practical: Systems in actual use 1. Sir W. H. Preece's method 2. Willoughby Smith's method 3. G. Marconi's method Appendix A. The relation between electricity and light, before and after Hertz Appendix B. Prof. Henry on high tension electricity being confined to the surface of conducting bodies, with special reference to the proper construction of lightning-rods. On modern views with respect to the nature of electric currents Appendix C. Variations of conductivity under electrical influence Appendix D. Researches of Prof. D. E. Hughes, F. R. S., in electric waves and their application to wireless telegraphy, 1879-1886 Appendix E. Reprint of G. Marconi's patent Index.
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