FIFTH EDITION. CONTENTS. _Alarms._--Doors and Windows; Cisterns, Low Water in Boilers; Time Signals; Clocks. _Batteries._--Making; Cells; Bichromate; Bunsen; Callan's; Copper-oxide; Cruikshank's; Daniel's; Granule carbon; Groves; Insulite; LeclanchÈ; Lime Chromate; Silver Chloride; Smee; Thermo-electric. _Bells._--Annunciator System; Double System; and Telephone; Making; Magnet for; Bobbins or Coils; Trembling; Single Stroke; Continuous Ringing. _Connections. Carbons. Coils._--Induction; Primary; Secondary; Contact-breakers; Resistance. Intensity Coils.--Reel; Primary; Secondary; Core; Contact-breaker; Condenser; Pedestal; Commutator; Connections. _Dynamo-Electric Machines._--Relation of Speed to Power; Field-Magnets; Pole-pieces; Field-magnet Coils; Armature Cores and Coils; Commutator Collectors and Brushes; Relation of size to efficiency; Methods of exciting Field-Magnets; Magneto-Dynamos; Separately excited Dynamos; Shunt Dynamos; Organs of Dynamos as constructed in practice; Field-Magnets; Armatures; Collectors; Brush Dynamo; Second Class; Alternate Currents; Third Class. _Fire Risks._--The Dynamo; Wires; Lamps; Danger to persons. _Measuring._--Non-Registering Instruments; Registering Instruments. _Microphones._--Construction, &c. _Motors._--Application; for Railways. _Phonographs. Photophones. Storage._--Plates. _Terminals._--Charging. _Telephones._--Forms; Circuits and Calls; Transmitter and Switch; Switch for Simplex. 135 PAGES. 126 ILLUSTRATIONS. 8 VO. Cloth, 75 Cents. * * * * * AN AMERICAN BOOK. INDUCTION COILS and COIL MAKING. Second edition thoroughly revised, greatly enlarged and brought up to latest American Practice, BY H. S. NORRIE, (NORMAN H. SCHNEIDER) Considerable space in the new matter is given to the following: Medical and bath coils, gas engine and spark coils, contact breakers, primary and secondary batteries; electric gas lighting; new method of X-ray work, etc. A complete chapter on up-to-date wireless telegraphy; a number of new tables and 25 original illustrations. Great care has been given to the revision to make this book the best American work on the subject. A very complete index, contents, list of illustrations and contents of tables have been added. Contents of Chapters.