June 1, 1887.] 



KNOWLEDGE 



191 



THE FACE OF THE SKY FOR JUNE. 



By F.E.A.S. 



HE sun may be watched for the isolated spots 

 which have somewhat unexpectedly begun to 

 reappear at intervals on his surface. The night 

 sky will be found depicted on Map VI. of " The 

 Stars in their Seasons " ; but there is no real night 

 during the entire month in any part of the British 

 Islands, twilight persisting from sunset to sunrise. 

 From the 19th to the 22nd in London the sun will 

 be 16h. 31m. above the horizon. Mercury is an 

 evening star throughout June, and does not set until nearly 10 o'clock 

 at night about the 18th, at which date he maybe easily detected 

 with the naked eye after sunset over the ^:.W. by W. part of the 

 horizon. Venus is also an evening star, and is the most brilliant 

 object in the sky. As it happens, she sets at her latest (llh. P.M.) 

 about tlie ISth, the same date that Mercury does. Her figure in the 

 telescope is now approaching that of the Moon when in her first 

 quarter. Mars is invisible. Jupiter is approaching the west, and 

 must be looked for as soon after suEset as he is visible. He will be 

 found to the E.X.E. of Spica Virginis (" The Stars in their Seasons," 

 Map V. or VI.). The certainly visible phenomena of his satellites 

 of course decrease in number. On the 1th Satellite III. will be 

 occulted 19 minutes after midnight. On the 5th Satellite I. will 

 begin its transit at llh. 5Sm. r.ii. ; as will the shadow it casts at 

 12h. o5m. On the 6th the same satellite will reappear from eclipse 

 at 12h. 18m. 33s. P.M., as will Satellite II. subsequently at 

 12h. .51m. 29s. On the 7th the egress of the shadow of Satellite I. 

 happens at 9h. 36m. p.m. On the 13th Satellite II. will be occulted 

 at lOh. 19m. P.M., as will Satellite I. afterwards at llh. Om. On 

 the 11th the egress of Satellite I. from Jupiter's disc will occur at 

 lOh. 27m. P.M., its shadow following it at llh. 31m. On the 15th 

 the egress of the shadow of Satellite II. takes place at lOh. 7m. P.M., 

 and the ingress of the shadow of Satellite III. at lOh. 2Gm. The 

 latter will pass off Jupiter's opposite limb twenty minutes after mid- 

 night. On the 21st Satellite I. will begin its transit at lOh. 5m. P.M., 

 followed by its shadow at llh. 13m. The visibility of the egress of 

 the satellite is very doubtful. On the 22nd Satellite III. will enter 

 on to Jupiter's face at 9h. 39m. P.M. Then the ingress of 

 the shadow of Satellite II. wUl happen at lOh. 7m., the 

 satellite casting it passing off the opposite limb of the planet at 

 lOh. 21m. At lOh. 36m. 7s. Satellite I. will reappear from 

 eclipse; and at llh. 45m. Satellite III. will leave the disc of Jupiter. 

 On the 29th, the transit of Satellite II. begins at lOh. 12m. p.m. ; and 

 finally, on the 30th, the shadow of Satellite I. will pass off at 9h. 50m. 

 p.m. Saturn, for the observer's purpose, has left us until the autumn. 

 Uranus may still be picked up immediately the twilight is deep 

 enough to the S.W. of y Virginis ; but he is very near to the horizon. 

 The Moon is full on the 5th at lOh. 38-3m. P.M. ; enters her last 

 quarter at Ih. 31-8m. P.M. on the 13th ; is new at lOh. 62 8m. A.M. 

 on the 21st, and enters her first quarter at lOh. I'Om. A.M. on the 

 28th. Five occultations of fixed stars by the Moon will occur 

 during June at convenient hours for the observer. On the 2nd, 94 

 Virginis, a star of the Cth magnitude, will disappear at the dark 

 limb of the Moon at Sh. 29m. P.M. at an angle from her vertex of 

 33.5°. It will reappear at her bright limb at 8h. 39m. P.M. at an 

 angle of 319° from her vertex. On the 1th, 49 Libras a 5^th-mag- 

 nitade star, will disappear at the dark limb at 7h. 55ra. p.m. at an 

 angle of 345° from the vertex of the Moon. It will reappear at 

 8h. 30m. at her bright limb, at a vertical angle of 284°. On the 

 .5lh, 29 Ophiuchi, of the 6th magnitude, will disappear at the 

 dark limb at oh. 52m. p.m. at an angle from the Sloon's vertes: 

 of 60°. The Moon, however, will be so nearly full that the 

 effect will be that of a disappearance at her bright edge. The re- 

 appearance at her really bright limb occurs at 9h. 59m. P.M. at 

 an angle of 224° from her vertex. On the 6th, B.A.C. G081, of 

 the 6tli magnitude, will disappear at the bright limb at 8h. 40m. 

 P.M. at a vertical angle of 20°, reappearing at the dark 

 limb at 9h. 39m. at an angle from the vertex of 258°. Lastly, 

 on the night of the 10th, 45 Capricorni, of the 6th magnitude, 

 will disappear at the Moon's bright limb at llh. 49m., at 

 an angle of 42° from her vertex ; to reappear at her dark limb 

 53 minutes after midnight at a vertical angle of 275°. At noon on 

 the 1st the Moon is in Virgo, across which she is tra%'elling until 

 3h. A.M. on the 3rd, when she enters Libra (" The Seasons Pic- 

 tured," plate xsvi.). She remains in Libra until lOh. P.M. on the 

 4th, at which hour she arrives at the boundary of the narrow 

 northern spike of Scorpio. She has traversed this by 6h. 30m. the 

 next morning, and emerged in Ophiuchus, her pa.ssage through 

 which is completed by 9h. P.M. on the 6th, when she crosses into 

 Sagittarius. She is in Sagittarius until oh. 30m. A.M. on the 9th, 

 and she then enters Capricornus (" The Seasons Pictured," plate 



xxi.). Her journey through Capricornus ends at 7h. a.m. on the 

 11th, when she crosses the boundary into Aquarius, and she quits 

 Aquarius in turn for Pisces at lOh. A.M. on the 13th (•' The Seasons 

 Pictured,'' plate xxii.). It is not until 4h. P.M. on the 16th that she 

 has traversed this great straggling constellation and entered on the 

 northern confines of Cetus. She leaves this outlier of Cetus at 

 6 o'clock the next morning, and enters Aries. By 10 a.m. on the 

 18th her journey over Aries is completed, and she pisses into 

 Taurus (" The Seasons Pictured," plate xxiii.). As she travels 

 through Taurus, she reaches, at 4h. 30m. A.M. on the 21st, the edge of 

 the northernmost portion of Orion. It takes her just 12 hours to 

 cross this, and she then emerges in Gemini ('• The Seasons Pic- 

 tured," plate xxiv.). She continues in Gemini until 9h. 30m. A.M. 

 on the 23rd, at which hour she enters Cancer. She passes from 

 Cancer into Leo at 9h. 30m. p.m. on the 21th, and is in Leo until 

 lOh. A.M. on the 27th, when she passes into Virgo (" The Seasons 

 Pictured,'' plate xxv.), and this she quits in turn for Libra at 

 I Oh. A.M. on the 30th, her passage across the whole width of Virgo 

 thus occupying exactly 72 hours (" The Seasons Pictured," plate 

 xxvi.). She is still in Libra at midnight on the 30th. 



#ur CftfsiS Column. 



By " Mephisto." 



I POSITION in a game played in a handicap tournament at tlic 

 British Cliess Club, White having received the odds of two 

 moves at starting. ^ „ 



° L. HOFPEE. 



Black. 



WurrE. 

 Wainkigut. 

 White plaved 



K X P R to Q7 (ch) 



If B X H, then Q to KtG (c-h) would win. 



Q X R B X R 



Q to Q6 (ch) K to B sq 



B to QR sq B to Q sq 



R X B R X Q 



P X B Q to B3 (cli) 



K to Kt sq Resigns. 



Position in a game played, at the odds of two moves, between 

 Messrs. Mills and Gunsberg. 



1. (;fNSRERr,. 

 Bi..\(;k. 



...... ...M ^ ^''^ 



■ ■ » i*"^ 



xmrmm 

 mkmm w 





''wTi 



White. 

 D. Y. Mills. 



