—— of Venus, Alleged, 152. Satellites of Jupiter, 187. —— of Mars, 164. —— of Saturn, 211. —— of Uranus, 220. SATURN, 195. Apparent lustre, 195. Period &c., 196. “Square-shouldered” aspect, 196. Early observations, 197. His belts and spots, 199. Rotation-period, 199. The Rings, 201. Divisions in outer ring, 201. Crape-ring, 202. Discordant observations, 204. Eccentric position of rings, 204. Aspect of the rings, 204. Further observations, 205. Occultations of Saturn, 209. The Satellites, 211. Transits of shadow of Titan, 213. Occultations of Stars by Saturn, 214. Scheiner’s early observations of Sun-spots, 89. Schiaparelli, Observations of Mars, 159. ——, Observations of Mercury, 141. —— associates Comets and Meteors, 264. Schmidt announces change in a lunar crater, 121. ——, Discoverer of a new Star, 315. Schröter’s observations of Mercury, 142. —— —— of Saturn, 200. —— —— of Venus, 148. Scintillation of Stars, 297. Scorpii α, 309. Shadows cast by Faculæ, 109. Short’s reflectors, 12. Showers of Meteors, 274. Sidereal work, 286. Silver-on-glass films, Duration of, 60. Sirius, 300, 307. Small telescopes, 31. —— —— and Mars, 160. —— —— and Solar work, 90. Solar Eclipse of Aug. 19, 1887, 98. —— Eclipses visible in England, 98. —— observations, 88. —— Prominences, 111. Southern Comets, Large, 233, 234. Spiral Nebula, 335. Spitaler’s Comet of 1890, 349. “Square-shouldered” aspect of Saturn, 196. Star-disks, 298. Stars, Nebulous, 330. ——, Occultation of, 135. —— visible through Comets, 246. STARS, THE, 286. Sidereal work, 286. Greek Alphabet, 287. Learning the names of the Stars, 287. The constellation Orion, 289. The constellation Figures, 290. Means of Measurement, 290. Dividing power, 292. Number of Stars, 293. Magnitudes, 294. The Milky Way, 295. Scintillation of Stars, 297. Star-disks, 298. Distance of the Stars, 299. Proper motions of Stars, 299. Double Stars and binary systems, 300. List of Double Stars, 302-5. α Canis Majoris, 307. β Orionis, 307. α Lyræ, 308. α Ursæ Minoris, 308. α Scorpii, 309. Variable Stars, 309. ο Ceti and β Persei, 310. List of Variable Stars, 311. New or temporary Stars, 312. Description of temporary Stars, 312. Star-colours, 315. Groups of Stars, 316. Coma Berenices, 317. The Pleiades, 317. Præsepe, 317. χ Persei, 317. κ Crucis, 318. ζ Ursæ Majoris, 318. σ Orionis, 318. θ Orionis, 318. Further Observations, 320. “Stops,” Utility of, 58. Storms, Meteor, 271. Straight Wall, 130, 131. Streak seen at Jask, Meteor-, 278. Structure of Sun-spots, Crateriform, 101.