Cooke, 25-inch refractor, [430]
Copeland, comets of 1843 and 1880 [349];
spectrum of comet of 1882 [364]
of γ Cassiopeiæ, [378]
of Nova Andromedæ, [395]; of Orion nebula, [407]
discoveries of gaseous stars, [379]
Nova Aurigæ, [396] [398]
Copernicus, stellar parallax,[ 16]
Cornu, telluric lines in solar spectrum, [202];
velocities in prominences, [205]
ultra-violet solar spectrum, [210] [215]
velocity of light, 232 note, [241]
spectrum of hydrogen, [383]
of Nova Cygni, [393]
Cornu and Bailie, density of the earth, [261]
Corona of 1842 [62]-64,[ 67];
early records and theories, [65]-67
photographs, [166] [173] [178] [181] [185]-190
spectrum, [170] [173] [178] [188] [190] [193]
varying types, [174]-176 [193]
of 1877 [175]-177
of 1882 [177]
of 1869 [183]
of 1886 [185]
of 1889 [185]-187
of 1893 [188]
of 1898 [189]
of 1900 [189]
of 1901 [190]
daylight photography of, [179]-180
glare theory, [182]
mechanical theory, [191]
electro-magnetic theories, [191] [192]
Cortie, movements in sun-spots, [157];
their spectral changes, [208]
Cotes, corona of 1715 [176]
Croll, secular changes of climate, [259] [260];
derivation of solar energy, [313]