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The telephone : $b a lecture entitled Researches in electric telephonyBell, Alexander Graham

Science

The telephone : $b a lecture entitled Researches in electric telephony

Name: The telephone : $b a lecture entitled Researches in electric telephony
Author: Bell, Alexander Graham

Bell, Alexander Graham

Telephone

_Mem. Inst. C.E., Consulting Engineer to the_
               _Government of India for State Railways_.

          Revised, with considerable Additions by the Author;
                together with a valuable contribution on
                      Telegraphs by R. S. BROUGH.

                         SYNOPSIS OF CONTENTS.
          Surveying, Levelling, etc.
          Strength and Weight of Materials.
          Earthwork, Brickwork, Masonry, Arches, etc.
          Struts, Columns, Beams, and Trusses.
          Flooring, Roofing, and Roof Trusses.
          Girders, Bridges, etc.
          Railways and Roads.
          Hydraulic Formulæ.
          Canals, Sewers, Waterworks, Docks.
          Irrigation and Breakwaters.
          Gas, Ventilation, and Warming.
          Heat, Light, Colour, and Sound.
          Gravity—Centres, Forces, and Powers.
          Millwork, Teeth of Wheels, Shafting, etc.
          Workshop Recipes.
          Sundry Machinery.
          Animal Power.
          Steam and the Steam Engine.
          Water-power, Water-wheels, Turbines, etc.
          Wind and Windmills.
          Steam Navigation, Ship Building, Tonnage, etc.
          Gunnery, Projectiles, etc.
          Weights, Measures, and Money.
          Trigonometry, Conic Sections, and Curves.
          Telegraph.
          Mensuration.
          Tables of Areas and Circumference, and Arcs of Circles.
          Logarithms, Square and Cube Roots, Powers.
          Reciprocals, etc.
          Useful Numbers.
          Differential and Integral Calculus.
          Algebraic Signs.
          Telegraphic Construction and Formulæ.

                   *       *       *       *       *

                      _Fcap. 8vo, cloth, 1s. 6d._

                         =Electro-Telegraphy,=

                        By FREDERICK S. BEECHEY,
                         _Telegraph Engineer_.

                         A Book for Beginners.

                   *       *       *       *       *

                      _Crown 8vo, cloth, 4s. 6d._
         =Guide for the Electric Testing of Telegraph Cables,=

                         By Captain V. HOSKLÆR.
                                Plates.

                               CONTENTS.
                  The Conductivity of the Copper.
                  The Charge of the Cable.
                  Insulation of the Cable.
                  Insulation of a Joint.
                  The Situation and Greatness of a Fault.
                  Testing and Laying of a Cable.
                  Formulæ, Tables, etc.

                   *       *       *       *       *

                                London:
                  E. & F. N. SPON, 46, CHARING CROSS.
                     NEW YORK: 446, BROOME STREET.





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The telephone : $b a lecture entitled Researches in electric telephony

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