Table
  condenser data
  copper wire
  German silver wire—­18 per cent
  German silver wire—­30 per cent
  metals, behavior of, in different electrolysis
  signal code
  specific inductive capacities
  temperature coefficients
  transmission distances, limiting
  winding data for insulating wires
Tandem differential electromagnet
Telegraph sounder
Telephone currents, measurements of
  electromagnetic method
  thermal method
Telephone exchange, features of
  districts
  subscribers’ lines
  switchboards
  toll lines
  trunk lines
Telephone lines
  conductivity of conductors
  electrostatic capacity
  inductance of circuit
  inductance vs. capacity
  insulation of conductors
  transmission
Telephone sets
  classification of
    common-battery telephone
    magneto telephone
    wall and desk telephones
  common-battery
    desk
    hotel
    wall
  magneto
    circuits of
      bridging
      series
    desk
    wall
Temperature coefficients
Thermal method of measuring telephone currents
Timbre
Toroidal impedance coil
Toroidal repeating coil
Transmission, ways of improving
Transmitters
  acousticon
  Automatic Electric Company
  carrying capacity
  conventional diagram
  electrode
    arrangement of
    multiple
    single
  granular carbon
  Kellogg
  materials
  Monarch
  packing
  sensitiveness
  switchboard
  symbols
  variable resistance
  Western Electric solid-back

U

Under-tuned ringer

V

Vacuum arrester
Variable resistance
Vibrating bell
Visible signals
  electric lamp
  electromagnetic
Volta
Voltaic cell
  amalgamated zincs
  difference of potential
  local action
  polarization
  theory

W

Wall telephone hooks
  Dean
  Kellogg
  Western Electric
Western Electric
  air-gap arrester
  desk stand hook
  drop and jack
  receiver
  ringer
  solid-back transmitter
  station arrester
  wall telephone hook
White transmitter
Wire gauges