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26 TELEPHONE AND NEW INVENTIONS. 699 Breguet’s Telephone. TOO French form of Telephone. 701 Phelps’ Duplex Telephone. 702 Phelps’ Telephone, used by the American Telephone Company. 703 Phelps’ Telephone magneto-electrio call hell, &c. 704 Phelp3’ Telephone, magneto-electrio call hell, &c., hox open. 705 Phelps’ Telephone and accessories. 706 A proprietor in his office communicating with his manager at the work3. 707 The Telephone in use. 703 The Telephone applied to the warfaro of the future. 709 Various uses of the Telephone, humorous. 710 Portrait of Edison. 711 Edison, the hoy-printer. 712 Edison's experiment, pressure and resistance of a carbon disc. 713 Edison’s Carbon Ilheostat. 714 Edison’s Telephones. 715 Edison’s Electro-motogvaph, diagram. 716 Edison’s Carbon Telephone. 717 Edison’6 Phonomotor. 713 Edison’s Phonomotor, section. 719 Edison's Microtasimeter. 720 Edison’s Microtasimeter, and accessories. 721 Edison’s Microtasimeter, section & diagram. 722 Edison’s Megaphone. 723 Edison’s Harmonic Engine. 724 Edison’s Electric Pen. 725 Edison’s Quadruple* Telegraph (diagram). 726 Edison’s Electro-motograpb, 727 Edison’a Phonograph, simple form. 72S Edison’s Phonograph, speed vanes & details. 729 Edison’s Phonograph with speed governor in use. 730 W. H. Preeco speaking into the Phonograph and the instrument speaking to Prof. Tyndall. 731 Edison’s Phonograph, details of diaphragm and magnified marks on foil. 732 Section of Phonograph. 733 Section of Phonograph, early form 734 Simple Phonograph. 735 Edison and his assistant singing a dust into the Phonograph, 7S6 Edison experimenting with Microtasimeter. 737 Carhon and Crown Telephone. 733 Hughes’ Microphone, experiment of pressure and resistance with a tube of white silver powder. 739 Hughes’ Microphone, experiment, the tube placed on a resonance box. 740 Hughes’ Microphone, experiment with three nails. 741 Hughes’ Microphone. Three nails in circuit, battery and Telephone. Diagram. 742 Hughes’ Microphone, experiment with lever resting on blocks of various substances. 743 Hughes’ Carbon Pencil Microphone. 744 Hughes’ Carbon Pencil Microphone, section. 745 Hughes’ Carbon Pencil Microphone in use. Walking of a fiy rendered audible. 746 Hughes’ receiving Microphone. 747 Pencil and receiving Microphone trans- mitting the ticking of a watch, diagram. 748 Telephone with Microphone relay. 749 M. du Moncel’s Microphone Telephone. 759 Carbon Penoil Microphone transmitting the ticking of watch. 761 Clock Microphone. 752 Cooke’s Telephone Call. 753 Hughes’ Induation Balance. Diagram of ordinary electrical induction. 764 Hughes’ Induction Balance. 755 Hughes’ Sonometer or Audiometer, 756 The Gower Telephone. 757 Edison’s Microtasimeter, improved form, exterior. 753 Edison’a Microtasimeter, improved form, sectional. 759 Edison’s Shouting Telephone. Principle if action. 760 Edison’a Shouting Telephone. Exterior. 761 Edison’s Shouting Telephone. Interior. 762 Edison’s Shouting Telephone. Sectional Diagram. 763 Edison's Shouting Telephone. Diagram of circuit, &c. 761 Simple Electro-Magnet. 765 Advertisement Bill of Electric Tclegraoh, 18 43, No. 1. 766 Advertisement Bill of Electric Telegraph, 1843, No. 2. 767 Cowper’s Writing Telegraph. Diagram. 768 Portrait of Sir Humphrey Davy, discoverer of the Electric Light. 769 JablochkofFs Electric Candle. 770 Bapiefi’s Electric Lamp. 771 RapiefFs Electric Moderator Lamp. 772 Werdermann’s Electric Lamp. 773 Werdermann’s Electric Lamp, circuit and experiments. 774 Wallace’s Electric Lamp. 775 Siemens’Magneto-electric Machine(old form) 776 Siemens’ Ma'gneto-electric Machine. 777 Siemens’ Magneto-electric Machine. Sec- tions, 778 Gram itle > a Magnoto-elcetric Machine, nor- mal tjT5e, 779 Gramme’s Magneto-electric Machine, JL’is- tributor. 780 Brush’s Magneto-electric Machine. 73J Wallacc-Farmer Magneto-electric Machine 782 M. de Meriten’s Magneto-electric Machine. 733 M. Lontin’s Dynamo-electric Machine, Generator. las M. Lontiii’s Dynamo-electric Machine, Divider, 735 The Electric Light on Thames Embank, ment, 786 The Electric Light in MM. Sautter and Lemonnier’s Workshops, Paris. 787 Dockyard works carried on by night by the Electric Light. 783 Football by the Electric Light. 7S9 Beading the Pigeon Post during the Siege of Paris by the Electric Light. 790 The Electric Light in Lantern Microscope. 791 Graphic Chart showing the fall in price of Gas-shares during 1878. 792 Edison’s Magneto-electrio Machine. 793 Edison’s Incandescent Electric Lamp. 794 Edison’s Incandescent Electric Lamp, Plati- num wire and Zircon. 795 Edison’s Incandescent Electric Lamp, Car- bon. 796 Edison’s Faradaic Generator. 797 Edison’s proposed Central Station of Genera- tors. 798 Edison’s Eleotrio Light Meter. 799 Edison’s Electric Motor. 800 Edison’s Dynamometer for measuring the force of an electric current. SOI Edison’s Electric Lamp, Bracket and Tabb Form. 802 Andrd’s Electric Lamp. 803 Ploughing by Electricity. 804 The Audiphone. 806 Jam in’a Electric Light.