﻿INDEX 
  

   to 
  terms 
  defined 
  in 
  the 
  Preface 
  {numbers 
  refer 
  to 
  paragraphs), 
  

  

  Acceleration 
  . 
  

  

  

  • 
  57 
  

  

  .f 
  

  

  Focus 
  . 
  . 
  . 
  

  

  27 
  

  

  Aftershocks 
  . 
  . 
  . 
  

  

  

  88 
  

  

  Free 
  surface 
  . 
  . 
  

  

  43 
  

  

  

  stic 
  . 
  i 
  

  

  

  95 
  

  

  Front 
  of 
  wave 
  . 
  , 
  

  

  . 
  3<S 
  

  

  

  Amplitude 
  ... 
  6 
  

  

  13 
  

  

  ,i3 
  

  

  

  

  

  53 
  

  

  72 
  

   28 
  

  

  Gravitational 
  waves 
  

  

  . 
  4,8 
  

  

  Angle 
  of 
  emergence 
  . 
  . 
  . 
  

  

  Great 
  undulations 
  . 
  

  

  49 
  

  

  Apparent 
  velocity 
  . 
  » 
  . 
  

   Area 
  of 
  propagation 
  . 
  

  

  

  51 
  

   33 
  

  

  Height 
  of 
  wave 
  . 
  , 
  

   Homoseist 
  • 
  • 
  

  

  6 
  

  

  29 
  

  

  Bulk 
  modulus 
  . 
  . 
  . 
  

  

  

  9 
  

  

  Horizontal 
  earthquake 
  

  

  37 
  

  

  Centre 
  

  

  

  27 
  

  

  Inertia 
  • 
  

  

  73 
  

  

  Component 
  • 
  . 
  

  

  

  35 
  

  

  Intensity 
  . 
  

  

  62 
  

  

  Condensational 
  wave 
  

  

  

  12 
  

  

  Isoseist 
  . 
  . 
  

  

  30 
  

  

  Core 
  • 
  . 
  • 
  

  

  

  33 
  

  

  

  

  Cryptoseismic 
  

  

  

  34 
  

  

  Length 
  of 
  wave 
  . 
  , 
  

  

  6", 
  15, 
  18 
  

  

  Destructivensss 
  . 
  . 
  . 
  

  

  

  64 
  

  

  Limit 
  of 
  elasticity 
  

  

  10 
  

  

  Destructivity 
  . 
  . 
  • 
  

  

  

  64 
  

  

  Macroseismic 
  . 
  

  

  . 
  34 
  

  

  Distortional 
  wave 
  . 
  . 
  

  

  

  18 
  

  

  Meizoseismic 
  line 
  

  

  . 
  31 
  

  

  Earthquake- 
  motion 
  

  

  Earthquakes, 
  cause 
  c 
  

  

  ■ 
  >, 
  second 
  

  

  »■ 
  '■, 
  types 
  c 
  

  

  Elastic 
  wave 
  • 
  • 
  

  

  ary 
  . 
  

   f 
  . 
  

  

  37 
  

  

  57 
  

   80 
  

  

  87 
  

  

  , 
  80 
  

  

  9 
  

  

  Microseismic 
  . 
  . 
  

   Modulus 
  of 
  elasticity 
  

   Molar 
  movement 
  • 
  

   Molecular 
  movement 
  

   Molecule 
  . 
  • 
  • 
  , 
  

  

  . 
  34 
  

   9 
  

   3 
  

   3 
  

   3 
  

  

  Elasticity 
  

  

  

  

  9 
  

  

  Normal 
  wave 
  . 
  • 
  , 
  

  

  • 
  12 
  

  

  Emergence 
  . 
  

  

  

  

  28 
  

  

  

  

  Epicentre 
  . 
  

  

  

  

  27 
  

  

  Onduloso 
  • 
  . 
  , 
  

  

  • 
  37 
  

  

  Epifocal 
  area 
  « 
  

  

  

  

  27 
  

  

  Orizzontale 
  • 
  ♦ 
  

  

  • 
  . 
  37 
  

  

  