;
extinction in space, 45;
refrangibility changed by movement, 201

Light-equation, 231, 241

Ligondes, development of solar system, 316

Lindsay, Lord, expedition to Mauritius, 234

Line of sight, movements in, 201, 386;
of solar limbs, 202, 203;
in prominences, 204, 208;
of stars, 201, 386, 387;
binaries detected by, 387-391

Listing, dimensions of the globe, 262

Littrow, chromosphere, 70;
sun-spot periodicity, 126

Liveing and Dewar, carbon in the sun, 212

Lockyer, solar spectroscopy, 156, 212;
theory of sun-spots, 159, 163;
daylight observations of prominences, 169, 194, 204, 205;
eclipse of 1870, 171;
slitless spectroscope, 173;
corona of 1878, 175;
glare theory of corona, 182;
eclipse of 1886, 184;
chromospheric spectrum, 195;
classification of prominences, 196;
their radial movements, 204;
celestial dissociation, 206-210;
chemistry of sun-spots, 207;
spots on Mars, 275;
meteoritic hypothesis, 376, 402;
equatoreal Coude, 438

Loewy, constant of aberration, 241, 438;
lunar photographs, 268;
director of Paris Observatory, 414;
equatoreal Coude, 436, 437

Lohrmann, lunar chart, 265;
Linne, 267

Lohse, J. G., spectrum of great comet, 364

Lohse, O., daylight coronal photography, 178 _note_;
spectral investigations, 211;
twilight on Venus, 256;
red spot on Jupiter, 294;
periodicity of Jupiter's markings, 297;
motion of Sirius, 386;
spectrum of Nova Cygni, 393

Louville, nature of corona, 67;
chromosphere, 68

Lowell, rotation of Mercury, 248;
of Venus, 252;
markings on Venus, 255;
observations of Mars, 280, 281;
satellites, 283

Lyman, atmosphere of Venus, 254

McClean, photographs of solar spectrum, 211, 215;
helium stars, 377;
oxygen stars, 384;
equipment of Cape Observatory, 433

Macdonnell, luminous ring round Venus, 254

Maclaurin, eclipse of 1737, 65

Maclear, Admiral, observations during eclipses, 172, 182

Maclear, Sir Thomas, maximum of Eta Carinae, 49;
observation of Halley's comet, 102

Maedler, central sun, 41;
observations
of Venus, 253;
lunar rills, 263;
aspect of Linne, 267;
common proper motions, 426

Magellanic clouds, 47, 422;
spiral character, 425

Magnetism, terrestrial, international observations, 126;
peri