262 



KNOWLEDGE 



[November 1, 1894. 



This is no fancy picture of a world of the imagination, 

 but a picture of an actual world, a world that has been, a 

 world that lasted millions of years, and a worlil that, 

 unlike the airy fabric of a vision, has left many wrecks 

 behind. 



THE FACE OF THE SKY FOR NOVEMBER. 



By Herbert Sadler, F.R.A.S. 



SUNSPOTS and faculse show few signs of decrease. 

 Conveniently observable minima of Algol occur at 

 Oh. 11m. A.M. on the 8th, 9h. Om. p.m. on the 10th, 

 .5h. 49m. P.M. on the 13th, and lOh. 42m. p.m. on 

 the 30 th. 

 Mercury is not favourably situated for observation during 

 the first half of the month, being too near the Sun. After 

 this date his position rapidly improves. On the 19th he 

 rises at 5h. 47m. a.m., or Ih. 40m. before the Sun, with a 

 southern declination of 12° .54', and an apparent diameter 

 of 8'2", -Tos'iis of the disc being illuminated. On the 

 24th he rises at 5h. 37m. a.m., or nearly two hours before 

 the Sun, with a southern declination of 13° 30', and an 

 apparent diameter of 7-0", about half the disc being 

 illuminated. On the 29th he rises at 5h. 43m. a.m., or 

 two hours before the Sun, with a southern declination of 

 15° 16', and an apparent diameter of G^", //o^'^^ o^ ^^^ 

 disc being illuminated. He is at his greatest western 

 elongation (20°) on the afternoon of the 27th. There will 

 be a transit of the planet across the Sun's disc on the 

 afternoon of the 10th, unfortunately under very unfavour- 

 able conditions for observation in England, though things 

 improve as we go west. At Greenwich external contact at 

 ingress takes place at 3h. 55m. lOs. p.m., at an angle for 

 direct image of 98° from the North Pole towards the east, 

 and internal contact at 3h. 57m. 23s. The Sun sets at 

 4h. 16m. P.M. While visible Mercury describes a direct 

 path in Libra, being near /n on the 23rd. 



Venus is too near the Sun for observation in November. 

 She is in superior conjunction with the Sun on the 30th. 



Mars is an evening star, and is admirably situated 

 for observation. He rises on the 1st at 4h. 3m. p.m., with 

 a northern declination of 7° 59', and an apparent diameter 

 of 20-2", the phase on the n f limb only amounting to 0-2". 

 On the 7th he rises at 3h. 30m. p.m., with a northern 

 declination of 7° 51', and an apparent diameter of 19-3", 

 the phase amounting to 0-3'. On the 12th he rises at 

 3h. 10m. p.m., with a northern declination of 7° 51', and 

 an apparent diameter of 18'4", the phase amounting to 

 about 0-5". On the 19th he rises at 2h. 40ai. p.m., with 

 a northern declination of 8° 1', and an apparent diameter 

 of 175:", the phase amounting to about 0-7". On the 26th 

 he rises at 2h. 10m. p.m., with a northern declination of 

 8° 23', and an apparent diameter of 15j", the phase 

 amounting to 0-9". On the 30th he rises at about Ih. 55m. 

 P.M., with a northern declination of 8° 40', and an apparent 

 diameter of 15^", the phase amounting to nearly 1". Mars 

 is stationary among the stars on the 22nd, and during the 

 first three weeks of November pursues a short retrograde 

 path to the west of Piscium ; after that, he retraces his 

 steps. 



Jupiter is an evening star in the sense of rising before 

 midnight. He rises on the 1st at 7h. SOm. p.m., or nearly 

 3h. after sunset, with a northern declination of 22° 59', 

 and an apparent equatorial diameter of 43". On the 6th 

 he rises at 7h. 8m. p.m , or 2|h. after sunset, with a 

 northern declination of 23° 0', and an apparent equatorial 

 diameter of 43-1". On the 12th he rises at 6h. 42m. 

 P.M., with a northern declination of 23° 1', and an apparent 



equatorial diameter of 44i". On the 19th he rises at 

 6h. 12m. P.M., with a northern declination of 23° 3', and an 

 apparent equatorial diameter of 45-1". On the 30th he 

 rises at 5h. 25m. p.m., or Hh. after sunset, with a northern 

 declination of 23° 7', and an apparent equatorial diameter 

 of 40". Puring the month he pursues a short retrograde 

 path in Gemini, to the north of fi and i; Geminorum. 

 The following phenomena of the satellites occur while the 

 Sun is 8° below and Jupiter 8° above the horizon : — On 

 the 1st an occultation reappearance of the second satellite 

 at 9h. 11m. p.m. Oa the 2nd a transit ingress of the 

 shadow of the first satellite at 4h. 36m. a.m. ; a transit 

 ingress of the satellite at 5h. 41m. a.m. On the Brd an 

 eclipse disappearance of the first satellite at Ih. 45m. 59?. 

 A.M.; its occultation reappearance at 5h. 4m. a.m.; a transit 

 ingress of the shadow of the first satellite at llh. 4m. 

 P.M. On the 4th a transit ingress of the first satellite at 

 Oh. 8m. A.M., a transit egress of its shadow at Ih. 20m. 

 A.M., a transit egress of its shadow at 2h. 24m. a.m. ; an 

 eclipse disappearance of the third satellite at 5h. lOm. 18s. 

 A.M. ; an occultation reapearanoe of the first satellite at 

 llh. 31m. P.M. On the 5th an eclipse disappearance of 

 the second satellite at 5h. 42m. 7s. a.m. ; a transit egress 

 of the second satellite at 8h. 51m. p.m. On the 6th a 

 transit ingress of the second satellite at llh. 50m. p.m. 

 On the 7th a transit ingress of the second satellite at 

 Ih. 63m. P.M., a transit egress of its shadow at 2h. 25m. 

 a.m. ; a transit egress of the satellite itself at 4h. 29m. a.m. ; 

 a transit egress of the shadow of the third satellite at 

 lOh. Om. p.m., a transit ingress of the satellite itself at 

 llh. 19m. P.M. On the 8th a transit egress of the third 

 satellite at 2h. 7m. a.m. ; an occultation reappearance of 

 the second sateUite at llh. 33m. p.m. At midnight oa the 

 lOth a lOi magnitude star will be between the second 

 satellite and the planet, 1^' ./' Jupiter and 2' north. On 

 the 11th a transit ingress of the shadow of the first satellite 

 at Oh. 58m. a.m., a transit ingress of the satellite at Ih. 55m. 

 A.M., a transit egress of the shadow at 3h. 14m. a.m., a 

 transit egress of the satellite at 4h. 11m. a.m., and an 

 eclipse disappearance of the first satellite at lOh. 8m. 10s. 

 P.M. On the 12th an occultation reappearance of the first 

 satellite at Ih. 19m. a.m. ; a transit ingress of the first 

 sateUite at 8h. 22m. p.m., a transit egress of its shadow at 

 9h. 42m. P.M., and a transit egress of the satellite at 

 lOh. 38m. P.M. On the 14th a transit ingress of the 

 shadow of the second satellite at 2h. 25m. a.m., a transit 

 ingress of the satellite at 4h. 13m. a.m., a transit egress of 

 its shadow at 5h. Om. a.m. ; a transit ingress of the shadow 

 of the third satellite at llh. 17m. p.m. On the 15th a 

 transit egress of the shadow of the third satellite at 2h. Om. 

 A.M., a transit ingress of the satellite at 2h. 50m. a.m., and 

 its transit egress at 5h. 37m. a.m. ; an eclipse disappearance 

 of the second satellite at 9h. 35m. 21s. p.m. On the 16th 

 an occultation reappearance of the second satellite at 

 Ih. 54m. a.m. On the 17th an eclipse disappearance of 

 the first satellite at 5h. 33m. 31s. a.m. ; a transit egress of 

 the second satellite at 7h. 59m. p.m. On the 18th a 

 transit ingress of the shadow of the first satellite at 

 2h. 52m. a.m., a transit ingress of the satellite at 3h. 42m. 

 A.M., a transit egress of the shadow at 5h. 8m. a.m , and of 

 the satellite at 5h. 58m. a.m. At midnight on the iHth 

 a 10^ magnitude star will be between the second 

 satellite and the planet, i' p Jupiter and 20" north. 

 On the 19th an eclipse disappearance of the first satellite 

 at Oh. 2m. Is. a.m., its occultation reappearance at 

 3h. 5m. A.M., a transit ingress of tho shadow of the 

 satellite at 9h. 20m. p.m., a transit ingress of the satellite 

 itself at lOh. 8m. p.m., and a transit egress of its 

 shadow at llh. 36m. p.m. On the 20th a transit egress 



