583-624 INDEX.PageA 7Absolute 7Absolute Calibration 97Absolute Electric Potential 429Absolute Electrometer 222Absolute Galvanometer 266Absolute Measurement 8Absolute Potential 428Absolute Temperature 8Absolute Unit 554Absolute Unit Resistance, Weber's 468Absolute Vacuum 557Absolute Zero 581Abscissa 7Abscissas, Axis of 54Absorption, Electric 8A. C. C. 8Acceleration 8Accumulator 8Accumulator, Electrostatic 8Accumulator, Water Dropping 9Acetic Acid Battery 58Acheson Effect 208Acid, Carbonic 108Acid, Chromic, Battery 61Acid, Hydrochloric, Battery 66Acid, Spent 491Acid, Sulphuric 497Acidometer 10Acierage 494Aclinic Line 10Acoustic Telegraphy 10Acoutemeter 10, 53Action, Electrophoric 230Action, Local 331Action, Magne-crystallic 335Action, Refreshing 454Action, Secondary 477Actinic Photometer 411Actinic Rays. 11Actinism 11Actinometer, Electric 11Active Electric Circuit, 123Activity 11Actual Horse Power 290Adapter 11A. D. C., 11Adherence, Electro-magnetic 11Adherence, Magnetic 338Adjuster, Cord 152Adjustment of Brushes 90Admiralty Rules of Heating 12AEolotropic 34Aerial Cable 95Aerial Conductor 12Affinity 12Affinity, Molecular 380After Current,. 159Agglomerate Leclanché Battery 66Agir Motor 13Agone 13Agonic Line, 13Air 13Air Blast 13Air Condenser 14Air Field 252Air Gaps 15Air Line Wire 15Air Pump, Heated 15Air Pump, Mercurial 16Air Pumps, Short Fall 16Alarm, Burglar 16Alarm, Electric 17Alarm, Fire, Electric Automatic 257Alarm, Fire and Heat 17Alarm, Overflow 18Alarm, Water Level 18Alcohol, Electric Rectification of 18Alignment, 18Allotropy 18Alloy 18Alloy, Platinum 419Alloy, Platinum-Silver 419Alloys, Paillard 400Alphabet, Telegraphic 19Alternating 23Alternating Current 159Alternating Current Arc 23Alternating Current Dynamo 193Alternating Current Generator or Dynamo 24Alternating Current Meter 373Alternating Current System 23Alternating Field 252Alternative Current 563Alternative Path 24Alternatives, Voltaic 563Alternator 24Alternator, Constant Current 24Alternator, Dead Point of an 177Alternation 23Alternation, Complete 23Alternation, Cycle of 175Alum Battery 58Aluminum 24Aluminum Battery 58Amalgam 24Amalgamation 25Amber 25American Twist Joint 309Ammeter 26Ammeter, Ayrton 26Ammeter, Commutator 26Ammeter, Cunynghame's 26Ammeter, Eccentric Iron Disc 27Ammeter, Electro-magnetic 27Ammeter, Gravity 27Ammeter, Magnetic Vane 27Ammeter, Magnifying Spring 28Ammeter, Permanent Magnet 28Ammeter, Reducteur for 453Ammeter, Solenoid 28Ammeter, Spring 28Ammeter, Steel Yard 28Ammunition Hoist, Electric 29Amperage 29Ampere 29Ampere- and Volt-meter Galvanometer 274Ampere Arc 30Ampere Balance 56Ampere Currents 30Ampere Feet 30Ampere-hour 30Amperes, Lost 30Ampêre's Memoria Technica 30Ampere Meters 26, 30Ampere Meter, Balance 391Ampere Meter, Neutral Wire 391Ampere-minute 30Ampere Ring 30Ampere-second 30Ampere's Theory of Magnetism 354Ampere-turns 31Ampere-turns, Primary 31Ampere-turns, Secondary 31, 551Ampere Windings 31Ampérian Currents 165Amplitude of Waves 31Analogous Pole 31, 425Analysis 31Analysis, Electric 32Analysis, Electrolytic 214Analyzer, Electric 32Anelectrics 32Anelectrotonus 32Angle of Declination 32, 177Angle of the Polar Span 32Angle of Inclination or Dip 33Angle of Lag 33-318Angle of Lead 33Angle of Maximum Sensitiveness 479Angle of Polar Span 423Angle, Polar 423Angle, Unit 554Angular Currents 165Angular Currents, Laws of 165Angular Force 544Angular Velocity 32, 559Animal Electricity 33Animal System, Electric Excitability of 247Anion 33Anisotropic 34Annealing, Electric 34Annular Electro-magnet 216Annunciator 34Annunciator Clock 35Annunciator Clock, Electric 127Annunciator Drop 35Annunciator, Gravity Drop 35Annunciator, Needle 35Annunciator, Swinging or Pendulum 35Anodal Diffusion 35Anode 36Anodic Closure Contraction 36Anodic Duration Contraction 36Anodic Opening Contraction 36Anodic Reactions 36Anomalous Magnet 335Anti-induction Conductor 36, 145Anti-magnetic Shield 37Antilogous Pole, 425Antimony 37Anvil 37A. O. C. 38Aperiodic 38Aperiodic Galvanometer 266Apparent Coefficient of Magnetic Induction 346Apparent Resistance 297, 462Apparent Watts 573Arago's Disc 88Arc 39Arc, Ampere 30Arc, Compound. 39Arc, Electric Blow-pipe 84Arc, Metallic 39Arc, Micrometer 39, 376Arc, Multiple 387Arc, Simple 39Arc, Voltaic 39Arc Box, Multiple 387Arc Lamp 319Arc Lamp, Differential 320Arc Lamp, Double Carbon 191Areometer 41Areometer, Bead 41Argyrometry 41Arm 41Armature 41Armature, Bar 42Armature, Bipolar 42Armature Bore 42Armature Chamber 42Armature, Closed Coil 43Armature Coil, or Coils 43Armature Conductors, Lamination of 319Armature Core 43Armature, Cylinder 43Armature, Cylindrical 45Armature, Disc 43Armature, Drum 45Armature Factor 45Armature, Flat Ring 45Armature, Girder 49Armature, H 49Armature, Hinged 45Armature, Hole 45Armature, Intensity 45Armature Interference 45Armature, Load of 46Armature, Multipolar 46Armature, Neutral 46Armature, Neutral Relay 46, 390Armature, Non-polarized 46Armature of Influence Machine 46Armature of Leyden Jar or Static Condenser 46Armature, Open Coil 46Armature, Perforated 45Armature, Pivoted 47Armature Pockets 47Armature, Polarized 47Armature, Pole 47Armature, Quantity 47Armature, Radial 47Armature Reactions 41Armature, Revolving, Page's 47Armature, Ring 48Armature, Rolling 49Armatures, Gyrostatic Action of 288Armature, Shuttle 49Armature, Siemens' Old 49Armature, Spherical 49Armature, Stranded Conductor 49Armature, Unipolar 50, 553Armature, Ventilation of 560Armor of Cable 50Arm, Rheostat 472Arms, Proportionate 436Arms, Ratio 437Arms, Rocker 50-474Arrester, Lightning 328Arrester, Lightning, Counter-electro-motive Force 329Arrester, Lightning, Plates 329Arrester, Lightning, Vacuum. 329Arrester Plate 417Arrester, Spark 489Arrival Curve 168Articulate Speech 50Artificial Carbon 106Artificial Magnet 335Ascending Lightning 330Assymmetrical Resistance 462Astatic 50Astatic Circuit 12Astatic Couple 157Astatic Galvanometer 266Astatic Needle 50Astronomical Meridian, 372Asymptote 51Atmosphere 51Atmosphere, Residual 51, 460Atmospheric Electricity 51Atom 52Atomic Attraction 52Atomic Current 160Atomic Energy 238Atomic Heat 52-285Atomic Weight 53Atomicity 52Attracted Disc Electrometer 223Attraction 53Attraction, Atomic 52Attraction, Magnetic 338Attraction, Molar 380Attraction, Molecular 380Attraction and Repulsion, Electro-dynamic 211Attraction and Repulsion, Electro-magnetic 217Attraction and Repulsion, Electro-static 234Attraction and Repulsion, Electro-static, Coulomb's Law of 155Audiometer 53Aura, Electrical 53Aurora 53Austral Pole 54Autographic Telegraph 510Automatic Circuit Breaker 121Automatic Cut Out 175, 475Automatic Drop 192Automatic Electric Bell 78Automatic Electric Fire Alarm 257Automatic Switch 500Automatic Telegraph 504A. W. G., 54Axial Couple 514Axial Force 544Axial Magnet 336Axis, Electric 54Axis, Magnetic 338Axis of Abscissas 54Axis of Ordinates 54, 397Axis of X 54Axis of Y 54, 397Ayrton's Ammeter 26Azimuth 54Azimuth Circle 54Azimuth Compass 141Azimuth, Magnetic 338B 55B. A. 55Back Electro-motive Force of Polarization 156Back Induction 55Back Shock or Stroke of Lightning 55Back Stroke 55Bagration Battery 59Balance 55Balance, Ampere 56Balance Ampere Meter 391Balance, Electric 577Balance, Inductance 293Balance, Plating 417Balance, Slide 374Balance, Thermic 85Balance, Torsion, Coulomb's 544Balance, Wheatstone's 577Balata 56Ballistic Galvanometer 567Balloon Battery 59B. and S. W. G. 56Banked Battery 59Bank of Lamps 323B. A. Ohm 394Barad 56Bar, Armature 42Bar, Bus 94Bar Electro-magnet 217Bar Magnet 336Barometer 56Bar, Omnibus 94Bar Photometer 411Bars, Commutator 56, 140Bath 57Bath, Bipolar Electric 57Bath, Copper 152Bath, Copper Stripping 152Bath, Electric Head 284Bath, Electric Shower 57Bath, Gold 279Bath, Gold Stripping 279Bath, Multipolar Electric 57Bath, Nickel 391Bath, Plating 418Baths, Electro-medical 222Bath, Silver 484Bath, Silver Stripping 484Bath, Stripping 57Bath, Unipolar Electric 57Batten 57-58Battery, Acetic Acid 58Battery, Alum 58Battery, Aluminum 58Battery, Bagration 59Battery, Balloon 59Battery, Banked 59Battery, Bichromate 59Battery, Bunsen 59Battery, Cadmium 60Battery, Callan 60Battery, Camacho's 60Battery, Carré's 60Battery, Cautery 61Battery Cell, Element of a 237Battery, Chloric Acid 61Battery, Chloride of Lime 61Battery, Chromic Acid 61Battery, Closed Circuit 61Battery, Column 61Battery, d'Arsonval's 62Battery, de la Rue .62Battery, de la Rive's Floating 179Battery, Dry 63Battery, Elements of 63Battery, Faradic 63Battery, Ferric Chloride 63Battery, Fuller's 63Battery, Gas 63Battery, Gas, Grove's 281Battery Gauge 64Battery, Gravity 64Battery, Grenet 65Battery, Grove's 65Battery, Hydrochloric Acid 66Battery, Lalande & Chaperon 69Battery, Lalande-Edison 69Battery, Lead Chloride 66Battery, Lead Sulphate 66Battery, Leclanché 66Battery, Leclanché Agglomerate 66Battery, Local 66, 831Battery, Magnetic 338Battery, Main 66Battery, Marié Davy's 67Battery, Maynooth's 67Battery, Medical 67Battery, Meidinger's 68Battery, Mercury Bichromate 63Battery Mud 68Battery, Multiple Connected 68Battery, Niaudet's 61Battery, Nitric Acid 68Battery of Dynamos 6SBattery of Leyden Jars, 68Battery, Open Circuit 68Battery or Pile, Thermo-electric 530Battery, Oxide of Copper 68Battery, Peroxide of Lead 69Battery, Platinized Carbon 69Battery, Plunge 69Battery, Pneumatic 69Battery, Primary 69, 434Battery, Pulvermacher's Electro-medical 69Battery, Sal Ammoniac 69Battery, Salt, or Sea Salt 69Battery, Sand 70Battery, Secondary 70Battery, Secondary, Planté's 72Battery, Secondary, Real Efficiency of 205Battery, Sir William Thomson's 72Battery, Siemens and Halske's 72Battery, Skrivanow 72Battery, Smee's 73Battery Solutions, Chromic Acid 73119, 178, 192, 232, 318, 421, 542, 549Battery, Spiral 73Battery, Split 73Battery, Sulphate of Mercury 67Battery System, Universal 556Battery, Thermo-chemical 530Battery, Trough 73Battery, Trouvé's Blotting Paper 73Battery, Tyer's 74Battery, Upward's 75Battery, Varley's 76Battery, Volta's 76Battery, Voltaic or Galvanic 76Battery Voltmeter 569Battery, Water 77Battery, Wollaston 78B. A. Unit, 554B. A. Unit of Resistance 78, 462B. A. Volt 568B. E. 78Bead Areometer 41Becquerel's Laws of Thermo-electricity 78Beaumé Hydrometer 78Bed-piece 78Bell, Automatic Electric 78Bell, Call 78, 98Bell Call 79Bell Call, Extension 248Bell, Circular 79Bell, Differentially Wound 79Bell, Electric 79Bell, Electro-mechanical 80Bell, Indicating 80, 297Bell, Magneto 80Bell, Magneto Call 361Bell, Night 392Bell-shaped Magnet, 336Bells, Relay 80, 457Bell, Trembling 78Bell, Vibrating. 78Belts, Joints in 311Bennett's Electroscope 233Bias 80Bias of Tongue of Polarized Relay 542Bichromate Battery 59Bichromate Mercury Battery 63Bifilar Suspension 498Bifilar Winding 81Binary Compound 81Binding 81Binding Posts or Screws 81Binnacle 81Biology, Electro- 208Bioscopy, Electric 82Bipolar Armature 42Bipolar Electric Bath 57Bisected Coils 132Bismuth 82Bi-telephone 82, 524Black, Platinum 419Blasting, Electric 83Bleaching, Electric 83Block, Branch 87Block, Cross-over 158Block System 83Block Wire 83Blotting Paper Battery, Trouvé's 73Blow-pipe 83Blow-pipe, Electric Arc 84Blue Magnetism 355Bluestone 84Blue Vitriol 562Board, Cross-connecting 157Board, Fuse 263Board, Hanger 284Board, Key 313Board, Multiple Switch 387Board of Trade Ohm 394Board of Trade Unit 555Board, Switch 500Boat, Electric 84Bobbins 84Body Protector 84Bohenberger's Electroscope 233Boiler Feed, Electric 84Boiling 84Boll 85Bolometer 85Bombardment, Molecular 380Bore, Armature 42Boreal Pole 85Bot 85Bound Charge 115Box Bridge 85Box, Cable 95Box, Cooling 151Box, Distributing 190Boxes, Flush 258Box, Fishing 311Box, Fuse 263Boxing the Compass 86Box, Junction 311Box, Multiple Arc 387Box, Resistance 462Box, Resistance, Sliding 463Box Sounding Relay 457Box, Splice 492Bracket, Saddle 475Bracket, Wall 572Braid, Tubular 550Brake, Electro-magnetic 86Brake, Magneto-electric 362Brake, Prony 435Branch 87Branch Block 87Branch Circuit 121Branch Conductor 87Branding, Electric 87Brassing 87Brazing, Electric 87Break 88Break, Circuit Loop 125Break-down Switch 88Breaker, Automatic Circuit 121Breaker, Circuit 121Breaker, Circuit, File 121Breaker, Contact 121, 146Break Induced Current 162Breaking Weight 89Break, Loop 332Break Shock 482Breath Figures, Electric 89Breeze, Electric 89Breeze, Static 493Breguet Unit of Resistance 463Bridge 89Bridge, Box 89Bridge, Inductance 293Bridge, Induction 293Bridge Key 313Bridge, Magnetic 338Bridge, Meter 373Bridge, Resistance 577Bridge, Reversible 472Bridge, Slide 374Bridge, Wheatstone . 575Bridge, Wheatstone, Commercial 36British Association Bridge 89Britannia Joint 309Broadside Method 89Broken Circuit 125Bronzing 89Brush 90Brush, Carbon 90Brush, Collecting 90Brush, Discharge 187Brushes, Adjustment of 90Brushes, Lead of 90Brushes, Negative Lead of 324Brushes, Scratch 476Brush, Faradic 251Brush Holders 91Brush, Pilot 91Brush, Rotating 91Brush, Third 91Brush Trimmer 549Brush, Wire Gauge 92Buckling 92Bug 92Bug Trap 92Bunched Cable 95Bunsen Battery 59Bunsen Disc 92Bunsen's Photometer 412Buoy, Electric 93Burglar Alarm 16Burner, Electric Gas 93Burning 94Bus Bar 94Bus Rod 94Bus Wire 94Butt Joint 310Button, Call 98Button, Press 94Button, Push 93, 98Buzzer 94B. W. G. 94C 95C. C. 109Cable 95Cable, Aerial 95Cable, Armature of 50Cable, Armor of 50Cable Box 95Cable, Bunched 95Cable, Capacity of 95Cable Clip 97Cable Core 96Cable, Duplex 96Cable, Flat 96Cablegram 96Cable Grip 96Cable Hanger 96Cable Hanger Tongs 97Cable, Suspension Wire of 97Cable Tank 97Cadmium Battery 60Calamine 97Cal Electricity 208Calibration 97Calibration, Absolute 97Calibration, Invariable 97Calibration, Relative 98Call Bell 78, 79, 98Call Bell, Extension 248Call Bell, Magneto 361Call Button 98Call, Thermo 530Call, Thermo-electric 531Callan Battery 60Calling Drop 98Calorie or Calory 98Calorimeter 98Calorimetric Photometer 412Calory or Calorie 98Cam, Listening 330Camacho's Battery 60Candle 99Candle, Concentric 99Candle, Debrun 99Candle, Decimal 99Candle, Electric 99Candle-foot 259Candle, German Standard 99Candle Holder 99Candle, Jablochkoff 100Candle, Jamin 100Candle, Meter 374Candle Power 100Candle Power, Nominal 101Candle Power, Rated 101Candle Power, Spherical 101Candle, Standard 101Candle, Wilde 101Caoutchouc 101Cap, Insulator 306Capacity, Carrying 108Capacity, Dielectric 102Capacity, Electric or Electrostatic 102Capacity, Instantaneous 102Capacity, Magnetic Inductive 346, 349Capillarity, Electro- 209Capillary Electrometer 224Capacity of a Telegraph Conductor 103Capacity of Cable 95Capacity of Polarization of a Voltaic Cell 103Capacity, Polarization 424Capacity, Residual 103Capacity, Specific Inductive 103Capacity, Storage 105, 495Capacity, Unit of 105Capillarity 105Capillary Telephone 525Carbon 106Carbon, Artificial 106Carbon Brush 90Carbon, Concentric 107Carbon, Cored 107Carbon Dioxide 107Carbon Holders 107Carbonic Acid, 108Carbonic Acid Gas 108Carbonization 107Carbonized Cloth 107Carbon, Platinized, Battery 69Carbon Resistance 463Carbon, Retort 471Carbons, Lamp, Flashing of Incandescent 257Carbon, Telephone 525Carbon Transmitter 549Carbon, Volatilization of 108Carburetted Hydrogen, Heavy 397Carcel 108Carcel Gas Jet 108Carcel Lamp 108Card, Compass 142Cardew Voltmeter 569Carré's Battery 60Carrying Capacity 108Cascade 108Cascade, Charging and Discharging Leyden Jars in 108Cascade, Gassiot's 275Case-hardening, Electric 109Cataphoresis 109Catch, Safety 175Cathode, etc. See Kathode 312Caustry, Galvano 109Cautery Battery 61Cautery, Electric 109Cautery, Galvano 109Cautery, Galvano-electric 109Cautery, Galvano-thermal 109Cell, Battery, Element of a 237Cell, Constant 109Cell, Electrolytic 109Cell, Porous 427Cell, Selenium 478Cell, Standard Voltaic 109Cell, Standard Voltaic, Daniells' 109Cell, Standard Voltaic, Latimer Clark's 110Central Station 493Central Station Distribution or Supply 112Centre of Gravity 112Centre of Gyration 112Centre of Oscillation 112Centre of Percussion 112Centrifugal Force 112Centrifugal Governor 113C. G. S. 113Chain, Molecular 380Chamber, Armature 42Chamber of Incandescent Lamp 113Change, Chemical 116Changer, Pole 425Changing Over Switch 500Changing Switch 500Chaperon, Lalande &, Battery 69Characteristic 169Characteristic Curve 113, 168Characteristic Curve, External 171Characteristic Curve of Converter 169Characteristic, Drooping 114Characteristic, External 114Characteristic, Internal 114Characteristics of Sound 114Charge 114Charge and Discharge Key 313Charge, Bound 115Charge Current 160Charge, Density of 115, 180Charge, Dissipation of 115Charge, Distribution of 115Charge, Free 115Charge, Negative 389Charge, Residual 116Charging Curve 170Chatterton's Compound 116Chemical Change 116Chemical Electric Meter 375Chemical, Electro-, Equivalents 244Chemical Element 236Chemical Energy 239Chemical Equivalent 244Chemical, Cautery Galvano 265Chemical Recorder 117Chemical Telephone 526Chemical Equivalent, Thermo- 245Chemistry 118Chemistry, Electro- 209Cheval, Force de 260Chicle 56Chimes, Electric 118Chloric Acid Battery 61Chloride, Ferric, Battery 63Chloride, Lead, Battery 66Chloride of Lime Battery 61Chlorimeter 73Choking Coil 132Chronograph, Electric 118Chromic Acid Battery 61Chromic Acid Battery Solutions 73Chromoscope 119Chutaux's Solution 119Cipher Code 130Circle, Azimuth 54Circle, Delezenne's 133Circle, Galvanic or Voltaic 119Circle, Magic 119Circuit 120Circuit, Astatic 120Circuit, Branch 121Circuit Breaker 121Circuit Breaker, Automatic 121Circuit Breaker, File 121Circuit Breaker, Mercury 121Circuit Breaker, Pendulum 121Circuit Breaker, Tuning-fork 121Circuit, Broken 125Circuit Changing Switch 500Circuit, Closed, Battery 61Circuit, Derivative 123Circuit, Derived 123Circuit, Electrostatic 123Circuit, Electric, Active 123Circuit, External 123Circuit, Grounded 123Circuit, Incomplete 125Circuit Indicator 298Circuit Induction, Open 303Circuit, Leg of 325Circuit, Local 331Circuit, Loop 125Circuit, Loop Break 125Circuit, Magnetic 340Circuit, Magnetic Double 340Circuit, Main 125Circuit, Main Battery 125Circuit, Metallic 125Circuit, Negative Side of 125Circuit, Open 125Circuit, Positive Side of 125Circuit, Recoil 125Circuit, Return 125Circuits, Forked 126Circuit, Short 482Circuit, Shunt 123, 126Circuit, Simple 126Circuits, Parallel 123, 126Circuit, Voltaic 126Circuit Working, Short 482Circular Bell, 79Circular Current, 160Circular, Mil 379Circular Units 126, 555Circumflux 126Clamp 126Clark's Compound 126Cleansing, Fire 257Clearance Space, 489Cleat, Crossing 127Cleats 127Cleavage, Electrification by 127Clip, Cable 97Clock, Annunciator 35Clock, Controlled 127Clock, Controlling 127Clock, Electric Annunciator 127Clock, Electrolytic 128Clock, Master 127Clock, Secondary 127Clock, Self-winding, Electric 128Clockwork Feed 128Cloisons 128Closed Circuit Battery 61Closed Coil Armature 43Closure 128Closure Contraction, Kathodic 312Cloth, Carbonized 107Club-foot Electro-magnet 217Clutch 128Clutch, Electro-magnetic 128Coatings of a Condenser, or Prime Conductor 129Cockburn Fuse 263Code, Cipher 130Code, S. N. 486Code, Telegraphic 130, 511Coefficient 130Coefficient, Apparent, of Magnetic Induction 346Coefficient, Economic 130, 204, 205Coefficient of Electrical Energy 205Coefficient of Expansion 247Coefficient of Induced Magnetization 359, 354Coefficient of Magnetic Induction 346, 349Coefficient of Mutual Induction 301Coefficient of Self-induction 298Coercitive Force 471Coercive Force 471Coercive or Coercitive Force 131Coil and Plunger 131Coil and Coil Plunger 131Coil and Plunger, Differential 132Coil, Armature 43Coil, Choking 132Coil, Earth 133Coil, Electric 133Coil, Exploring 350Coil, Flat 133Coil, Induction 133Coil, Induction, Inverted 136Coil, Induction, Telephone 137Coil. Kicking 132Coil, Magnet 336Coil, Magnetizing 137Coil, Reaction 132Coil, Resistance 137Coil, Resistance, Standard 464Coil, Rhumkorff 138Coil, Ribbon 138Coils, Bisected 132Coils, Compensating 138Coils, Sectioned 138Coils, Henry's 138Coils, Idle 295Coil, Single, Dynamo 202Coil, Spark 489Coil, Sucking 132Collecting Brush 90Collecting Ring 139Collector 139Colombin, 139Colophony 460Colors of Secondary Plates 478Column Battery 61Column, Electric 139Comb 140Combined Resistance 464Comb Protector 437Commercial Efficiency 204Commercial Efficiency of Dynamo 195Commercial Wheatstone Bridge 86Common Reservoir 460Communicator 140Commutation, Diameter of 182Commutator 140Commutator Ammeter 26Commutator Bars 140, 56Commutator, Flats in 140Commutator, High Bars of 289Commutator, Neutral Line of 390Commutator, Neutral Point of 390Commutator of Current Generators and Motors 140Commutators, Bars of 56Commutator Segments 56Commutator, Split Ring 141Commuted Current 160Commuter 140Commuting Transformer 547Compass 141Compass, Azimuth 141Compass, Boxing the 86Compass Card, 142Compass, Declination 142Compass, Inclination 142Compass, Mariners' 142Compass, Points of the 143Compass, Spirit 143Compass, Surveyors 143Compass, Variation of the 32, 558Compensating Coils 138Compensating Magnet 336Compensating Poles 426Compensating Resistance 144Complementary Distribution 144Complete Alternation 23Component 144Components of Earth's Magnetism 356Composition of Forces 260Compound Arc 39Compound, Binary 81Compound, Chatterton's 116Compound, Clark's 126Compound Dynamo 195Compounding, Over- 399Compound Magnet 336Compound or Compound Wound Motor 382Compound Winding 578Concentration of Ores, Magnetic 340Concentrator, Magnetic 340Concentric Candle 99Concentric Carbon 107Condenser 144Condenser, Coatings of a, or Prime Conductor 129Condenser, Epinus' 242Condenser, Plate 417Condenser, Sliding 144Condenser, Varley's 559Condensing Electroscope 233Conductance 144Conductance, Magnetic 340Conduction 144Conduction, Electrolytic 215Conductive Discharge 187Conductivity 144Conductivity, Magnetic 340Conductivity, Specific 145Conductivity, Unit of 145Conductivity, Variable 145Conductor 145Conductor, Anti-induction 145Conductor, Branch 87Conductor, Capacity of a Telegraph 103Conductor, Conical 145Conductor, Imbricated 146Conductor, Interpolar 307Conductor, Leakage 325Conductor, Prime 146, 434Conductors, Equivalent 146Conductors, Lamination of Armature 319Conductors, Service 481Conductor, Underground 552Congress Ohm 395Congress Volt 568Conical Conductor 145Conjugate 146Connect 146Connection, Cross 158Connection, Relay 457Connector 146Consequent Points 422Consequent Poles 146, 478Conservation of Electricity 146Conservation of Energy 239Constant Current 160Constant Current Alternator 24Constant Current Regulation 454Constant, Dielectric 183Constant, Galvanometer 268Constant Potential 429Constant Potential Regulation 455Constant, Time 54lContact Breaker 121, 146Contact, Electric 147Contact Electricity 147Contact Faults 147Contact Key, Double 314Contact Key, Sliding 316Contact Lamp 320Contact, Line of 330Contact Point 147Contact Potential Difference 147Contact Ring 473Contact Spring 148Contact Series 147Contact Theory 148Continuity, Magnetic 340Continuous Alternating Transformer 547Continuous Current 161Continuous Current Transformer 384, 547Contraction, Anodic Closure 36Contraction, Anodic Duration 36Contraction, Anodic Opening 36Contraction, Kathodic Closure 312Contraction, Kathodic Duration 312Contractures 148Contraplex Working 580Control, Electro-magnetic 218Control, Gravity 281Controlled Clock, 127Controlling Clock 127Controlling Field 148Controlling Force 148Controlling Magnet 185, 336Control, Magnetic 341Control, Spring 492Convection, Electric 149Convection, Electrolytic 149, 214Convection of Heat, Electric 149Convective Discharge 187Conversion, Efficiency of 205Converter 149Cooling Box 151Co-ordinates, Origin of 391Co-ordinates, System of 150Copper 151Copper Bath 152Copper Stripping Bath 152Copper Voltameter 563Cord Adjuster 152Cord, Flexible 152Cord, Pendant 405Core 152Core, Armature 43Core, Cable 96Cored Carbon 107Core-discs 152Core-discs, Perforated 154Core-discs, Pierced 152Core-discs, Toothed 154Core, Laminated 154Core, Magnet 336Core Ratio 154Core, Ribbon 154Core, Ring 155Cores, Krizik's 318Core, Stranded 155Core, Tangentially Laminated 155Core Transformer 155Core, Tubular 155Corpusants 155Corresponding Points 422Coulomb 155Coulomb's Law of Electrostatic Attraction and Repulsion 155Coulomb's Law of Magnetic Attraction and Repulsion 338Coulomb's Torsion Balance 544Coulomb, Volt- 568Counter, Electric 156Counter Electro-motive Force 156, 228Counter-electro-motive Force Lightning Arrester 329Counter Inductive Effect 204Couple 156Couple, Astatic 157Couple, Axial 544Couple, Magnetic 341Couple, Moment of 544Couple, Thermo-electric 532Couple, Voltaic or Galvanic 156Coupling 259Coupling of Dynamo 201C. P. 157Crater 157Creep, Diffusion 184Creeping 157Creeping, Magnetic 341Creeping of Magnetism 356Crith 157Critical Current 161Critical Distance of Alternative Path 190Critical Resistance 464Critical Speed 157Critical Value, Villari's 561Crookes' Dark Space 489Cross 157Cross-connecting Board 157Cross Connection 158Cross Induction 298Crossing Cleat 127Crossing Wires 158Cross-magnetizing Effect 158, 298Cross-over Block 158Cross, Peltier's 405Cross Talk 158Crucible, Electric 158Crystallization, Electric 158Cube, Faraday's 249Culture. Electro- 209Cunynghame's Ammeter 26Cup, Mercury 371Cup, Porous 159, 426Current 159Current, After 159Current, Alternating 159Current, Alternating System 23Current, Alternative 563Current Arc, Alternating 23Current, Atomic 160Current, Break Induced 162Current, Charge 160Current, Circular 160Current, Commuted 160Current, Constant 160Current, Continuous 161Current, Continuous, Transformer 384Current, Critical 161Current, Daniel 161Current, U. S. or Siemens' Unit 161Current, Demarcation 161Current Density 161Current, Derived 164Current, Diacritical 161Current, Diaphragm 161Current, Direct 162Current, Direct Induced 162Current, Direction of 162Current, Displacement 162Current, Extra 162Current, Faradic 162Current, Field of Force of a 255Current, Foucault 163Current, Franklinic 163Current Generator 277Current, Induced 163Current Induction 163Current Induction, Unipolar 553Current Intensity 163Current, Inverse Induced 163Current, Jacobi's Unit of 163Current, Joint 163Current, Linear 164Current, Make and Break 164, 367Current, Make Induced 163Current Meter 164, 375Current Meter, Alternating 373Current, Negative 164Current, Nerve and Muscle 164Current, Opposed 164Current, Partial 164Current, Polarizing 164Current, Positive 164Current, Power of Periodic 433Current, Pulsatory 164Current, Rectified 164Current, Rectilinear 165Current, Redressed 165Current Regulation, Constant 454Current, Reverse Induced 163Current Reverser 165Currents, Ampere 30Currents, Ampérian 165Currents, Angular. 165Currents, Angular, Laws of 165Currents, Earth 166Current, Secondary 166Current, Secretion 166Currents, Eddy 163Currents, Eddy Displacement 162Currents in Parallel Circuits, Independence of 297Current, Sinuous 166Current, Sheet 166Current, Shuttle 483Currents, Local 163Currents, Local 331Currents, Multiphase 166Currents, Natural 166, 389Currents, Nerve 390Currents of Motion 167Currents of Rest 167Currents, Orders of 167Currents, Parasitical 163Currents, Polyphase 167Currents, Rotatory 167Currents, Thermo-electric 167Current Streamlets 495Current, Swelling 167Current, Tailing 501Current, Undulatory 167Current, Unit 167Current, Wattless 168Curve, Arrival 168Curve, Characteristic 113, 168Curve, Characteristic, of Converter 169Curve, Charging 170Curve, Discharging 170Curve, Elastic 206Curve, Electro-motive Force 170Curve, External Characteristic . 171Curve, Harmonic 174, 485Curve, Horse Power 171Curve, Isochasmen 171Curve, Life 171Curve, Load 172Curve, Magnetization 172Curve of Distribution of Potential in Armature 172Curve of Dynamo 173Curve of Saturation of Magnetic Circuit 174Curve of Sines 173, 485Curve of Torque 174Curve, Permeability Temperature 174Curve, Sine 174, 485Curve, Sinusoidal 174, 485Curves, Magnetic 341Cut In 174Cut Out 174Cut Out, Automatic 175, 475Cut Out, Magnetic 175Cut Out, Plug 175Cut Out, Safety 175Cut Out, Spring Jack 493Cut Outs, Time 541Cut Out, Wedge 175Cutting of Lines of Force 175Cycle of Alternation 175Cycle of Magnetization 360Cylinder, Armature 43Cylinder, Electric Machine 333Cylindrical Armature 45Cystoscopy 175Damper 176Damping 176Damping Magnet 336Daniell's Standard Voltaic Cell 109Dark Space, Faraday's 249D'Arsonval's Battery 62Dash-pot 176Dead Beat 38, 176Dead Beat Discharge 187Dead Earth 176, 203Dead Point of an Alternator 177Dead Turns 177Dead Turns of a Dynamo 551Dead Wire 177Death, Electrical 177Debrun Candle 99Decalescence 177Decay of Magnetism 356Deci 177Decimal Candle 99Declination, Angle of 32-177Declination Compass 142Declination, Magnetic 342Declination Map 309Declination of the Magnetic Needle 178Decomposition 178Decomposition, Electrolytic 178Decrement 178De-energize 178Deflagration 178Deflagrator, Hare's 73Deflecting Field 178Deflection 178Deflection Method 178Deflection of Magnet 337Degeneration, Reaction of 179Degradation of Energy 239Deka 179De la Rive's Floating Battery 179De la Rue Battery 62Delaurier's Solution 179Delezenne's Circle 133Demarcation Current 161Demagnetization 179Density, Current 161Density, Electrical 115Density, Electric Superficial 180Density, Field 252Density, Magnetic 342Density of Charge 115, 180Dental Mallet, Electric 180Deposit, Electrolytic 180Deposit, Nodular 392Depolarization 180Depolarizing Fluid 258Derivation, Points of 180, 423Derivative Circuit 123Derived Circuit 123Derived Current 164Derived Units 555Desk Push 180Detector 180Detector, Lineman's 180Deviation of Discharge 188Deviation, Quadrantal 180Deviation, Semi-circular 181Device, Safety 475Dextrotorsal 181Diacritical 181Diacritical Current 161Diagometer 181Diagnosis, Electro- 181, 210Diagram, Thermo-electric 532Dial Telegraph 505Diamagnetic 181Diamagnetic Polarity 181, 423Diamagnetism 182Diameter of Commutation 182Diapason, Electric 182Diaphragm 182Diaphragm Current 161Dielectric, 182Dielectric Capacity 102Dielectric Constant 183Dielectric, Energy of 183Dielectric Polarization 183Dielectric Resistance 183, 464Dielectric Strain 183Dielectric Strength 183Dielectric Stress 496Differential Arc Lamp 320Differential Coil and Plunger 132Differential Galvanometer 268Differentially Wound Bell, 79Differential Magnetometer 365Differential Motor 382Differential Relay 457Differential Thermo-electric Pile 533Differential Winding Working 183Diffusion 184Diffusion, Anodal . 35Diffusion Creep 184Digney Unit of Resistance 464Dimensions and Theory of Dimensions 184Dimmer 185Diode Working 580Dioxide, Carbon 107Dioxide, Sulphur 497Dip, Magnetic 342, 346Dip of Magnetic Needle 185Dipping 185Dipping Needle 185Direct Current 162Direct Current Dynamo 197Direct Induced Current, . 162Direct Reading Galvanometer 269Directing Magnet 185Direction 185Direction of Current 162Direction, Positive 428Directive Power 187Disc, Arago's 38Disc, Armature 43Disc, Bunsen 92Disc, Dynamo 197Disc, Faraday's 249Discharge and Charge Key 313Discharge, Brush 187Discharge, Conductive 187Discharge, Convective 187Discharge, Dead Beat 187Discharge, Disruptive 187Discharge, Duration of 188Discharge, Glow 187Discharge, Impulsive 188Discharge Key, Kempe's 315Discharge, Lateral 188Discharge of Magnetism 356Discharge, Oscillatory 188Discharger 188Discharger, Henley's Universal 189Discharger, Universal 189Discharger, Universal, Henley's 189Discharge, Silent 187, 189, 206Discharge, Spark 189Discharge, Surging 188Discharging Curve 170Discharging Rod 189Discharging Tongs 189Disconnection 189Discontinuity, Magnetic 342Discovery, Oerstedt's 394Disc Winding 579Dispersion Photometer 412Displacement Current 162Displacement, Electric 188Displacement, Oscillatory 398Disruptive Discharge 187Disruptive Tension 189Dissimulated Electricity 189Dissipation of Charge 115Dissociation 189, 535Distance, Critical, of Alternative Path 190Distance, Explosive 190Distance, Sparking 190Distance, Striking 496Distant Station 493Distillation 190Distortion of Field 252Distributing Box 190Distributing Switches 190Distribution, Complementary 144Distribution, Isolated 309Distribution of Charge 115Distribution of Electric Energy, Systems of 190Distribution of Magnetism, Lamellar, 357Distribution of Magnetism, Solenoidal 358Distribution of Supply, Central Station 112Door Opener, Electric 190Dosage, Galvanic 190Double Break Switch 500Double Carbon Arc Lamp 191Double Contact Key 314Double Curb Working 581Double Fluid Theory 191Double Fluid Voltaic Cell 191Double Magnetic Circuit 340Double Needle Telegraph 506Double Plug 191Double Pole Switch 500Double Tapper Key 314Double Touch, Magnetization by 358Double Trolley 549Double Wedge 191Doubler 191D. P. 191Drag 191Drag of Field 254Dreh-Strom 191