Cottingham 128
Counter-Point 112
Covariant@Co-variant#Co-variant 43
Crommelin 128
Curvature of light-rays 104, 127 space 127
Curvilinear motion 74
Cyanogen bands 131
Darwinian theory 124
Davidson 128
Deductive thought 123
Derivation of laws 44
Desitter@De Sitter#De Sitter 17
Displacement of spectral lines 104, 129
Distance (line-interval) 3, 5, 8, 28, 29, 84, 88, 109 physical interpretation of 5 relativity of 28
Doppler principle 50
Double stars 17
Eclipse of star 17
Eddington 104, 128
Electricity 76
Electrodynamics 13, 19, 41, 44, 76
Electromagnetic theory 49 waves 63
Electron 44, 50 electrical masses of 51
Electrostatics 76
Elliptical space 112
Empirical laws 123
Encounter (space-time coincidence) 95