Bracket bolts, 25

Bridle, 28
  putting in new, 50
  wire, 28, 50

Bridges, 16, 17
  split, 173

Building of upright piano, 16

Butts, 28
  and flanges, repairing of, 59

Capstan, 24, 48

Cause of beats 27, 150

Center-pins, 25
  putting in new 52

Clicks at release of key, 51, 52

Compromises, the, 99, 100

Continuous mute, 89

Damper lever, 29 felt, softening, 54

Damper, of grand piano, 37
  of square piano, 36, 60
  rod, 30
  rod, squeaking of, 55
  spoon, 29
  springs broken, 54

Dampers, 18, 29

Damping, defective, 54, 60, 61

Ditonic comma 144

Evolution of the piano, 12

Extension, 23

False waves, 160, 161

Fifths, beats of, 79
  not all tempered alike, 105, 106
  tempering of, 79, 104

Final inspection, 172

Fischer System of temperament, diagram of, 82

Flanges, 25
  repairing of, 59

Guide pins, 23

Hammer, butt, refelting, 51
  capping with buckskin, 59
  felts, cleaning, 34
    gluing, 54
    hardening, 54
    softening, 54
    trimming, 60
    voicing, 54, 104
  head 29
  rail, 29, 33
  shank or stem, 29, 53
    broken, 63
    renewing, 53
  spring, 52
  sticking, 52

Hitch-pins, 16, 17

Instrumental attachments, removal of, 118

Intervals flattened, 157
  sharpened, 157

Ivories, regluing, 64

Jack, 26
  repairing of, 50, 58
  sluggish, 57
  -spring broken, 58

Key, defects in, 47, 48
  leads, 22
  organ, sticking, 185, 186
  removing, square piano, 56
  squeaking, 64
  sticking, 46

Lead, in keys, 22
  black, use of, 64
  loose in key, 64

Length, tension, and weight of strings, 75

Loud pedal, 19, 30

Main rail, 25

Mathematics of tempered scale, 126

Metal plates, 15

Mute, continuous, 89, 90

Mutes, setting in upright piano, 117-120
  in bass, 121
  beyond temperament, 120
  in square piano, 122
  on nodal points, 161

Octave, dividing into major thirds, 134
  into minor thirds, 140
    perfect fifths, 142

Octaves, relative vibration of, 78

Organ, reed, tuning and repairing the, 178
  bellows, leaks in, 187
  capabilities of, 179
  cleaning, 180
  examination, 183
  keys sticking, 185, 186
  pallets, 186
  pedal defects, 188
  reeds, to find, 184
    tuning, 190
  stops, 182
    disconnected, 184
  sympathetic vibration, 189