INDEX
Abercromby, 10
Aitken, 3, 91
Altitude of clouds, 19, 149
—— of rain-clouds, 76
Alto clouds, 59, 159
Alto-cumulus communis, 161
—— castellatus, 66, 160
—— glomeratus, 67, 161
—— informis, 64, 160
—— nebulosus, 65, 160
—— stratiformis, 65, 161
Alto-strato-cumulus, 70, 160
Alto-stratus maculosus, 68, 160
Ascent of vapour, 124
Atlas, International, 11
Band cirrus, 41
Bidwell, Shelford, 92
Black mirror, 14, 173
Blue Hill, 20, 138
Cameras, 140, 171
Change cirrus, 37
—— of velocity, 35
Cirriform top of thunder-cloud, 110
Cirro-cumulus, 45, 159
—— nebulosus, 52, 159
Cirro-filum, 33, 156
Cirro-macula, 53, 159
Cirro-nebula, 26, 27, 155
Cirro-stratus, 45, 157
—— communis, 47, 158
Cirro-stratus cumulosus, 48, 158
—— nebulosus, 45, 158
—— vittatus, 158
Cirro-velum, 24
Cirrus, 21, 155
—— altitudes, 30, 149
—— communis, 40, 157
—— caudatus, 34, 156
—— excelsus, 31, 156
—— inconstans, 37, 157
—— nebulosus, 36, 156
—— ripples, 51
—— ventosus, 32, 156
—— vittatus, 41, 156
Cloud altitudes, 149
—— nuclei, 3
—— photography, 17, 165
Condensation, 93
Cooling by contact, 89
—— by expansion, 92
—— by mixture, 90
—— by radiation, 88
Development, 175
Differential currents, 133
Diffraction, 63
Dimensions of clouds, 112
Dry fog, 73
Equilibrium, stable and unstable, 106
Exeter measurements, 137
Exposure, 167
Fall cloud, 81, 88
False cirrus, 110
Fog particles, 60
Fracto, 164
Gravitation, 4
Great waves, 129
Halos, 21, 22, 23
Heat cumulus, 85
—— thunderstorms, 107
Hildebrandsson, 10
Hoar frost, 60
Howard, Luke, 9, 10
Intensification, 177
Interconvection, 125
International Code, 11
—— Committee, 10
—— System, 12, 71
Ions as nuclei, 92
Irregularities of ground, 39
Kepler, 4
Kew, 138
Ley, Clement, 24, 34, 55
Lightning, 114
Lower clouds, 71
Mammato-cumulus, 99
Meteorological Conference, 9
Methods of computing altitudes, 143
Munich, 9
Newton, 4
Nimbus, 74, 163
Nuclei, 92
Photographic methods, 17, 165
Rain-clouds, altitude, 76
——, thickness, 81
Rate of fall of temperature, 94
Sandstorms, 117
Saturation, 87
Scotch mist, 73
Slow plates, 167
Spread of condensation, 57
Stable equilibrium, 106
Strato-cumulus, 77
Stratus, 72, 161
—— communis, 77, 161
—— lenticularis, 80, 98, 162
—— maculosus, 78, 162
—— radius, 79, 162
Subsidence of cloud top, 111
Surfusion, 61
Swing stand, 171
Turreted cloud, 66
Tycho Brahe, 4
Types, 8
Umbra and penumbra, 29
Undatus, 164
Unsaturated cloud, 101
Upsala, 10, 138
Wave clouds, 47, 119, 133
Wilson, C. T. R., 92
Aitken, 3, 91
Altitude of clouds, 19, 149
—— of rain-clouds, 76
Alto clouds, 59, 159
Alto-cumulus communis, 161
—— castellatus, 66, 160
—— glomeratus, 67, 161
—— informis, 64, 160
—— nebulosus, 65, 160
—— stratiformis, 65, 161
Alto-strato-cumulus, 70, 160
Alto-stratus maculosus, 68, 160
Ascent of vapour, 124
Atlas, International, 11
Band cirrus, 41
Bidwell, Shelford, 92
Black mirror, 14, 173
Blue Hill, 20, 138
Cameras, 140, 171
Change cirrus, 37
—— of velocity, 35
Cirriform top of thunder-cloud, 110
Cirro-cumulus, 45, 159
—— nebulosus, 52, 159
Cirro-filum, 33, 156
Cirro-macula, 53, 159
Cirro-nebula, 26, 27, 155
Cirro-stratus, 45, 157
—— communis, 47, 158
Cirro-stratus cumulosus, 48, 158
—— nebulosus, 45, 158
—— vittatus, 158
Cirro-velum, 24
Cirrus, 21, 155
—— altitudes, 30, 149
—— communis, 40, 157
—— caudatus, 34, 156
—— excelsus, 31, 156
—— inconstans, 37, 157
—— nebulosus, 36, 156
—— ripples, 51
—— ventosus, 32, 156
—— vittatus, 41, 156
Cloud altitudes, 149
—— nuclei, 3
—— photography, 17, 165
Condensation, 93
Cooling by contact, 89
—— by expansion, 92
—— by mixture, 90
—— by radiation, 88
Development, 175
Differential currents, 133
Diffraction, 63
Dimensions of clouds, 112
Dry fog, 73
Equilibrium, stable and unstable, 106
Exeter measurements, 137
Exposure, 167
Fall cloud, 81, 88
False cirrus, 110
Fog particles, 60
Fracto, 164
Gravitation, 4
Great waves, 129
Halos, 21, 22, 23
Heat cumulus, 85
—— thunderstorms, 107
Hildebrandsson, 10
Hoar frost, 60
Howard, Luke, 9, 10
Intensification, 177
Interconvection, 125
International Code, 11
—— Committee, 10
—— System, 12, 71
Ions as nuclei, 92
Irregularities of ground, 39
Kepler, 4
Kew, 138
Ley, Clement, 24, 34, 55
Lightning, 114
Lower clouds, 71
Mammato-cumulus, 99
Meteorological Conference, 9
Methods of computing altitudes, 143
Munich, 9
Newton, 4
Nimbus, 74, 163
Nuclei, 92
Photographic methods, 17, 165
Rain-clouds, altitude, 76
——, thickness, 81
Rate of fall of temperature, 94
Sandstorms, 117
Saturation, 87
Scotch mist, 73
Slow plates, 167
Spread of condensation, 57
Stable equilibrium, 106
Strato-cumulus, 77
Stratus, 72, 161
—— communis, 77, 161
—— lenticularis, 80, 98, 162
—— maculosus, 78, 162
—— radius, 79, 162
Subsidence of cloud top, 111
Surfusion, 61
Swing stand, 171
Turreted cloud, 66
Tycho Brahe, 4
Types, 8
Umbra and penumbra, 29
Undatus, 164
Unsaturated cloud, 101
Upsala, 10, 138
Wave clouds, 47, 119, 133
Wilson, C. T. R., 92
THE END
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