nean, eclipse tracks across, 94, 97

Melbourne telescope, 118

Melotte, P., 232

Mercator's Projection, 80-81

Mercury (the metal), 145

Mercury (the planet), 20, 22, 25-26, 31-32, 34, 37, Chap. XIV.;
markings on, 156;
possible planets within orbit of, 25-26;
transit of, 62, 151, 154

Metals in sun, 145

Meteor swarms, 268-269, 271, 274-275

Meteors, 28, 56, 167, 259, Chap. XXI.

Meteors beyond earth's atmosphere, 275-276

Meteorites, 276-277

Meteoritic Hypothesis, 335

Metius, Jacob, 108

Michell, 283, 305

Middle Ages, 102, 260, 264

Middleburgh, 108

Milky Way (or Galaxy), 285, 299, 311, 317, 319-327;
penetration of, by photography, 325

Million, 47, 51-52

Minor planets. _See_ Asteroids.

Mira Ceti, 307-308

"Mirk Monday," 89

Mirror (speculum), 111, 116

Mizar, 294, 302

Monck, W.H.S., 275

Mongol Emperors of India, 107

Moon, 26, Chap. XVI.;
appearance of, in lunar eclipse, 65, 102-103;
diameter of, 189;
distance of, how ascertained, 58;
distance of, from earth, 48;
full, 63, 86, 149, 184, 189, 190, 206;
mass of, 200, 202;
mountains on, 197-205;
how their height is determined, 201;
movement of, 40-42;
new, 86, 149, 183, 185;
origin of, 339-341;
plane of orbit of, 63;
possible changes on, 204-205, 221;
"seas" of, 197, 206;
smallest detail visible on, 207;
volume of, 200

Morning star, 149-150, 241

Moulton, F.R., 31, 118, 128, 302, 335, 337

Moye, 154

Multiple stars, 300

Musa-ben-Shakir, 44

Mythology, 105

Neap-tides, 179

Nebulae, 314-318, 328, 335, 345;
evolution of stars from, 317-318

Nebular Hypothesis of Laplace, 333-338

Nebular hypotheses, Chap. XXVII.

Nebulium, 317

Neison, 206

Neptune, 20, 25, 31, 34, 37, 243-246, 249, 252, 274, 304;
discovery of, 23-24, 94, 210, 236, 243-244;
Lalande and, 244;
possible planets beyond, 25, 252;
satellite of, 26, 245;
"year" in, 35-36

"New" (or temporary), stars, 310-314

Newcomb, Simon, 181, 267, 281, 324, 326-327, 329

Newton, Sir Isaac, 40, 44, 91, 111-113, 115, 165, 172, 237, 255

Newtonian telescope, 112, 114, 116, 119

Nineveh Eclipse, 84-85

Nitrogen, 145, 156, 166, 346

Northern Crown, 295

Nova Aurigae, 311

Nova Persei, 312-314

Novae. _See_ New (or temporary) stars

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