p. 215Magnet lines,22,23.Magnet, permanent,25,38,46,50,172.Magnet, reversed,20.Magnet, steel,53.Magnet, swinging,53.Magnetic,7,19,20,21,22,25,113,178.Magnetic construction,39.Magnetic exterior,27.Magnetic field,22,24,27,38,50,112,146,148,155.Magnetic interior,23.Magnetic pull,59.Magnetic radiator,37.Magnetism,19,54,104,110,159,171.Magnetized,18,25,27,50.Magnetized wire,146.Magnets,13,14,18,19,20,21,22,23,24,25,39,51,53,54,70,71,73,75,81,90,93,112,113,115,147,150,163,176,177,178.Main conductor,31.Mandrel,15,16.Manganese,19.Manifestations,19.Mariner,172.Material, non-conducting,90.Maximum,154.Measure,55,56,60,62.Measurement,62.Measuring devices,27.Measuring instruments,8.Mechanism,47,180.Medical batteries,99.Mercury,63,169.Metal base,73.Mica,186.Microphone,118,119,120.Millimeter,63.Minus,34.Minus sign,21.Morse code,76.Motor,7,21,27,46,47,62,82,99,150,176,180.Mouthpiece,115.Mouthpiece rays,188.Moving field,117.Multiple,168.Musical scale,111.NNegative,21,35,36,68,83,86,87,94,125,151,152,154,165,177,178,179.Neutral,125.Neutral plate,84.Nickel,136.Nickel plating,132.Nitrate of silver,62.Nitrogen,126.p. 216Non-conducting material,90.Non-conductor,164.Non-magnetic,19.North pole,20,21,22,23,25,50,54,156.Number plate,75.N-ray,188.OOhms,60,63.Ohms, international,63.Ohms law,7.Operator,95,118.Oscillating,99,105.Osmium,169.Oxides,125.Oxidizing,183.Oxygen,35,123,125,126,128,129,169.PPacking ring,124.Paraffine,56,100,101,102.Paraffine wax,86.Parallel,87,88,89.Parallel switch bar,67.Parallel wires,28,49.Partition,124.Peon,13.Percolate,128.Periodicity,159.Periods of alternations,149.Permanent,18,19,50.Permanent magnet,25,38,46,50,172.Phase,19.Phenomenon,27,65.Photograph,186.Physical,21.Pile, voltaic,33.Pipe,61.Pitchblende,186.Pivot pin,53.Pivotal,22.Plane,13.Plate,57,93.Plate, contact,67,68,79.Plate, copper,33,35,58,67.Plate, negative,84.Plate, number,75.Plate, positive,84,88.Plate, zinc,33.Platinum,13,57,137.Pliers,14.Plus sign,21,24.Pointer,53.Polarity,154,177,178,179.Polarization,35.Pole, north,20,21,22,23,25,50,54,156.p. 217Pole piece,40,42.Pole, south,20,21,22,25,50,54,156.Poles,177,179.Polonium,186.Porcelain,86.Porous,85.Positive,4,21,25,36,40,68,83,86,87,94,123,125,151,152,153,155,165.Post, binding,52,71.Potentiality,105,109.Power,38,186.Power, candle,89,139.Precipitate of lead,83,85.Precision,7.Pressure,87.Primary,35,62,98,134,142,159,184.Primary battery,7,99.Primary circuit,99.Primary coil,106,109.Prime conductor,6.Projected,185.Propagated,105,185.Properties,55.Purification,123,128.Purifier,126,131.Push button,65,68,69,70,76,79.QQuantity,55,60,61,138.Quartz,186.RRadio-activity,186.Radium,184,185,187,188.Ratchet drill,13.Reaction,148.Receiver,12,90,97,121,122.Receiving station,109.Rectangular,69.Rectifiers,146.Red lead,83,84.Reel,13.Reflected,185.Refraction,185.Refractory,182.Register,57.Removable,54.Removable cap,73.Repel,20.Repulsion,21,128.Reservoir,61,62.Resiliency,99.Resistance,7,36,37,60,63,99,135,136,137,138,140,141,156,157,163,166,168.Resistance bridge,7.Resistance, external,37.Resistance, internal,37.Rheostat,7.Reversed,20,50,153.p. 218Reversible,163.Reversing,176.Reversing switch,67.Revolubly,46.Revolve,179.Revolving,177.Roentgen rays,184.Roentgen tube,187.Rotation,149.Rubber,40,46,77,115,126,130,138.SSad-irons,13.Saline,133.Sanitation,12.Saturated,85.Screw,15.Screw, binding,65,66.Screw-driver,14.Screw, set,72.Sealing wax,53.Secondary,62,98,105,158,159,160.Secondary circuit,99.Secondary coil,107,108.Self-induction,149,156.Sender,90,97.Sending apparatus,106.Sending key,90.Separately excited,46.Series-wound,47.Severed magnet,20.Sewage,12.Shaft,30.Shears,14,17.Shellac,40.Shunt-wound,47.Signal,118.Silver,19,63,125.Silver nitrate,62.Socket,54,139.Soldering,14.Soldering iron,17.Solution,55,57,62,63,84,86,133,134,142.Sounder,90,92,95,96.Sounding board,119.Source, charging,83.South pole,20,21,22,25,50,54,156.Spark gap,102,106.Spark jump,99.Spring finger,69.Square,14,17.Standard,62,63.Station,94,95,117,122.Steel,18,19.Steel magnet,53.Sterilized,12.Stirrup,75.Stock bit,13.
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p. 218