s comet, 353, 354;
of Orion nebula, 407

Japetus, eclipse of, 300;
variability in light, 302

Jewell, solar spectroscopy, 200, 211

Joule, heat and motion, 309

Jupiter, mass corrected, 77, 92;
conjectured influence on sun-spot development, 163;
physical condition, 289, 290;
spectrum, 290, 291;
satellite-transits, 291, 292;
discovery of inner satellite, 293;
red spot, 293-296;
photographs, 297, 408;
periodicity of markings, 297

Kaiser, rotation of Mars, 275;
map of Mars, 278

Kammermann, observation of Maia nebula, 410

Kant, status of nebulae, 14;
Sirius the central sun, 40;
planetary intervals, 71;
tidal friction, 272;
condition of Jupiter, 289;
cosmogony, 308

Kapteyn, solar translation, 40;
Cape Durchmusterung, 412;
stellar parallaxes, 417, 418;
actinic intensity of galactic stars, 425;
solar cluster, 426

Kayser and Runge, spectroscopic investigations, 211, 213

Keeler, red spot on Jupiter, 296;
spectroscopic determination of movements in Saturn's rings, 300;
spectrum of Uranus, 304;
of third type stars, 382;
of nebulae, 402;
photographs of nebulae, 403, 411, 412, 432;
nebular radial movements, 405, 434, 440;
grating spectroscope, 440

Kepler, star of 1604, 25;
solar corona, 66;
missing planets, 71;
cometary decay, 91, 339;
comet of 1618, 96;
physical astronomy, 141

Kiaer, comets' tails, 348

Kirchhoff, foundation of spectrum analysis, 132, 135-137, 372;
map of solar spectrum, 137;
solar constitution, 149, 151, 172

Kirkwood, distribution of minor planets, 286;
grouped orbits, 287;
divisions in Saturn's rings, 301, 302;
origin of planets, 314;
their mode of rotation, 321;
comets and meteors, 333, 339

Kleiber, Perseid radiants, 341

Klein, Hyginus N., 267, 268

Klinkerfues, comet predicted by, 335, 339;
apparitions of Southern comet, 350;
tidal theory of new stars, 397

Knobel, cloud effects on Mars, 281

Konkoly, spectrum of Gamma Cassiopeiae, 378;
spectroscopic survey, 381 _note_

Kreil, lunar magnetic action, 130

Kreutz, period of 1843 comet, 105;
orbit of 1861 comet, 327;
period of great September comet, 361;
cause of disintegration, 363;
eclipse-comet of 1882, 362

Krueger, segmentation of great comet, 362

Kuestner, variatio