optical, excise duty on, 112, 115;
Guinand's, 113, 114;
Jena, 431

Gledhill, spot on Jupiter, 294

Goldschmidt, nebulae in the Pleiades, 411

Goodricke, periodicity of Algol, 390

Gore, catalogue of variable stars, 391;
of computed binaries, 418

Gothard, bright-line stellar spectra, 378, 379;
spectrum of Nova Aurigae, 398;
photographs of nebulae, 409

Gould, variation of latitude, 258;
photograph of Mars, 281;
comets of 1807 and 1881, 349, 352;
luminous instability of stars, 392;
photographic measures of the Pleiades, 410;
_Uranometria Argentina_, 415;
solar cluster, 423, 426

Graham, discovery of Metis, 77

Grant, solar envelope, 70, 167;
transit phenomena, 254

Green, observation of Mars, 280

Greenwich observations, 3, 27, 32

Gregory, David, achromatic lenses, 112 _note_

Gregory, James, double star method of parallaxes, 16;
reflecting telescopes, 109

Groombridge, star catalogue, 31

Grosch, corona of 1867, 176

Grubb, Sir Howard, photographic reflector, 409;
great refractors, 430, 433;
siderostat, 437

Grubb, Thomas, Melbourne reflector, 110 _note_, 428

Gruithuisen, snow-caps of Venus, 255;
lunar inhabitants, 265

Gully, detection of Nova Andromedae, 394

Guthrie, nebulous glow round Venus, 253

Hadley, Saturn's dusky ring, 86;
reflecting telescope, 109

Haerdtl, Winnecke's comet, 94

Hale, luminous outburst on sun, 161;
daylight coronal photography, 179;
spectrum of prominences, 195, 198;
prominence photography, 197, 198;
photographs of faculae, 198, 377;
carbon in chromosphere, 200;
bright lines in fourth-type stars, 381;
reflectors and refractors, 432

Hall, Asaph, parallax of the sun, 241;
discovery of Martian satellites, 282;
rotation of Saturn, 302;
double star measurements, 419

Hall, Chester More, invention of achromatic telescope, 112

Hall, Maxwell, rotation of Neptune, 305

Halley, stellar proper motions, 9;
composition of nebulae, 22;
observation of Eta Carinae, 48;
eclipse of 1715, 66, 68;
predicted return of comet, 88;
magnetic theory of aurorae, 130;
transits of Venus, 233;
lunar acceleration, 271;
origin of meteors, 327

Halm, magnetic relations of latitude variation, 259

Hansen, solar parallax from lunar theory, 230

Hansky, coronal photograph