M. 31: 0 h. 37 m. + 40° 43′. Great Spiral Nebula. Visible to naked eye near [nu] Andromedæ. Rather disappointing in small glass. [Sigma] 205 or [gamma] : 1 h. 58 m. + 41° 51′ : 3-5 : 62′5° : 10·2″. Yellow, bluish-green. 5 is also double, a binary, but a very difficult object at present. AQUARIUS. M. 2 : 21 h. 28 m. - 1° 16′. Globular cluster; forms flat triangle with [alpha] and [beta]. [Sigma] 2909 or [zeta] : 22 h. 24 m. -0° 32′ : 4-4·1 : 319·1° : 3·29″. Yellow, pale yellow. Binary. AQUILA. M. 11 : 18 h. 46 m. - 6° 23′. Fine fan-shaped cluster. Just visible to naked eye. V : 18 h. 59 m. - 5° 50′. Red star, variable from 6·5 to 8·0. ARGO NAVIS. M. 46 : 7 h. 37 m. - 14° 35′. Cluster of small stars, about 1/2° in diameter. ARIES. [Sigma] 180 or [gamma] : 1 h. 48 m. + 18° 49′ : 4·2-4·4 : 359·4° : 8·02″. Both white. Easy and pretty. [lambda] 1 h. 52 m. + 23° 7′ : 4·7-6·7 : 47° : 36·5″. Yellow, pointed to by [gamma] and [beta]. AURIGA. (Capella) [alpha] : 5 h. 9 m. + 45° 54′. Spectroscopic binary; period 104 days. M. 37 : 5 h. 46 m. + 32° 31′. Fine cluster. M. 36 and M. 38 also fine. All easily found close to straight line drawn from [kappa] to [phi] Aurigæ. [beta] : 5 h. 52 m. + 44° 57′. Spectroscopic binary, period 3·98 days. 41: 6 h. 4 m. + 48° 44′ : 5·2-6·4 : 353·7 : 7·90″. Yellowish-white, bluish-white. BOÖTES. [Sigma] 1864 or [pi] : 14 h. 36 m. + 16° 51′ : 4·9-6 : 103·3° : 5·83″. Both white. [Sigma] 1877 or [epsilon] : 14 h. 40 m. + 27° 30′ : 3-6·3 : 326·4° : 2·86″. Yellow, blue. Fine object and good test. [Sigma] 1888 or [xi] : 14 h. 47 m. + 19° 31′ : 4·5-6·5 : 180·4° : 2·70″. Yellow, purple, binary. [Sigma] 1909 or 44 : 15 h. 0 m. + 48° 2′ : 5·2-6·1 : 242° : 4·32″. CAMELOPARDUS. V. : 3 h. 33 m. + 62° 19′. Variable, 7·3 to 8·8. Fiery red. CANCER. [Sigma] 1196 or [zeta] : 8 h. 6 m. + 17° 57′ : 5-5·7-6·5 : 349·1°, 109·6° : 1·14″, 5·51″. Triple ; 5 and 5·7 binary, period 60 years; 6·5 revolves round centre of gravity of all in opposite direction. [Sigma] 1268 or [iota] : 8 h. 41 m. + 29° 7′ : 4·4-6·5 : 307° : 30·59″. Yellow, blue. Præsepe: Cluster, too widely scattered for anything but lowest powers. CANES VENATICI. [Sigma] 1622 or 2 : 12 h. 11 m. + 41° 13′ : 5-7·8 : 258° : 11·4″. Gold, blue. [Sigma] 1645 : 12 h. 23 m. + 45° 21′ : 7-7·5 : 160·5° : 10·42″. White. Pretty, though faint. [Sigma] 1692, 12, or [alpha] : 12 h. 51 m. + 38° 52′ : 3·1-5·7 : 227° : 19·69″. Cor Caroli. White, violet. M. 51 : 13 h. 26 m. + 47° 43′. Great spiral. 3° S.W. of [eta] Ursæ Majoris. M. 3 : 13 h. 38 m. + 28° 53′. Fine globular cluster; on line between Cor Caroli and Arcturus, rather nearer the latter. CANIS MAJOR.