1898, 96, 98;
1900, 97;
1905, 75-76, 80-81, 97-98;
1907, 98;
1908, 98;
1914, 99;
1927, 92, 99-100

_Eclipses, Past and Future_, 340

Egenitis, 272

Electric furnace, 128

Electric light, spectrum of, 122

Elements composing sun, 144-145

Ellipses, 32, 66, 172-173, 177-178

Elliptic orbit, 66, 177

Ellipticity, 32

Elongation, Eastern, 147, 149;
Western, 147, 149

Encke's Comet, 253, 256

"End of the World," 342

England, solar eclipses visible in, 87-88, 91-92

Epsilon, ([e]) Lyrae, 302

Equator, 48

Equatorial telescope, 226

Equinoxes. _See_ Precession of

Eros, 210-211, 223, 226-227;
discovery of, 24, 210, 227;
importance of, 211;
orbit of, 32, 37, 210, 336

Eruptive prominences, 139

_Esclistre_, 89

Ether, 322-323, 331-332

Europa, 233, 235

Evans, J.E., 219

Evening star, 149-150, 241

Everest, Mount, 200

Evershed, 182

Eye-piece, 110

Fabricius, 307

Faculae, 136, 143

Fauth, 205

Faye, 335

_Fin du Monde_, 346

First quarter, 183

"Fixed stars," 280

Flagstaff, 215-216, 220

Flammarion, Camille, 346

Flamsteed, 90

"Flash spectrum," 137

"Flat," 112

Flint glass, 115

Focus, 66, 177

"Forty-foot Telescope," 115

Foster, 102

Fraunhofer, 117

French Academy of Sciences, 115

Froissart, 89

"Full moon" of Laplace, 190

Galaxy. _See_ Milky Way.

Galilean telescope, 109

Galileo, 55, 109, 172, 197, 206, 232-235, 242

Galle, 24, 211, 244

Ganymede, 233-234

Gas light, spectrum of, 122

Gegenschein, 181-182

"Gem" of meteor ring, 271

Gemini, or the Twins (constellation), 22, 296-297

Geminorum, [z] (Zeta), 304

Geometrical groupings of stars, 292

"Giant" planet, 230, 238-239

Gibbous, 183, 185

Gill, Sir David, 211, 258, 291, 317-318

Gold, 145

Goodricke, 307

Gore, J.E., 63, 285, 303, 307-308, 310, 323-324, 331, 337, 347

Granulated structure of photosphere, 134

Gravitation (or gravity), 39, 41-45, 128, 306

Greek ideas, 18, 158, 161-162, 171, 186, 197

Green (rays of light), 121

Greenwich Observatory, 143-144, 232, 255, 303

Gregorian telescope, 113-114

Grimaldi (lunar crater), 199

"Grindstone" theory, 319-322

"Groombridge, 1830," 281-282, 326, 330

Groups of stars, 306-307

Grubb, Sir Howard,