168 



KNO^A/'LEDGE 



[May 1, 1888. 



game resulted in a draw. Mr. Blackburne subsequently pointed out 



that White could have won bv playing 



P to KtC, for i£ R to K4(ch) 



K to Kt4, then, K lo R8 



P to Kt 7 R to Kt8(ch) 



K to B.") R to li8(ch) 

 K to Q4, and White wins 



MULLER. 

 Black. 



White. 

 ZUKEIITORT. 



THE FACE 



FOR MAY. 



OF THE SKY 



By F.R.A.S. 



I'OTS on the sun are both small and very infrequent' 

 liut his disc may be watched on clear days. The 

 in,;,'ht sliy is depicted on map v. of " The Stars in 

 tlieir ISeasons." Mercury is a morning star at the 

 licginning of May, coming into superior conjunc- 

 tion with the sun on the 10th. Then of course he 

 travels to the east of the sun and becomes an 

 cNening star. At the end of the month he may 

 be caught with the naked eye after sunset, over 

 the N.W. by \V. part of the horizon. Venus is a morning star, but 

 her appearance is singularly insignilicant when compared with that 

 which she presented last November, when so many fatuous people 

 hailed her as " the star of Rethlehem." Mars is still a striking 

 object in the n'ght sky, but his angular diameter is steadily and 

 sensibly decreasing. It will be noted, too, by the sharpsighted 

 observer with the telescope that he is no longer quite round. He 

 will be found between 8 and y Virgiois (-'The Stars in their 

 Seasons," map v.). On the night of the 5tU he and Uranus will be 

 so close together as to be in the same low-power tield of a telescope. 

 Jupiter is visible near to midnight, in fact sooner, but is so very low 

 down that to be seen in the least degree favourably he should be 

 looked <at when close to the meridian. Jupiter is travelling towards 

 3' Scorpii (" The Stars in their .Seasons," map vii.), and will, in fact, 

 be only 2' north of that star during tlie early morning of the 2 1st. 

 The phenomena of his satellites fairly observable at convenient 

 hours during May are as follow. On the 1st the ingress of the 

 shadow of satellite i. will happen at llh. 4.3m. p.m., and that of the 

 satellite itself twelve minutes after midnight. On the 2nd 

 satellite i. will reappear from occultation at llh. 42m. P.M. 

 On the 5th satellite ii. will disappear in eclipse at llh. 43m. 33s. 

 P.M. On the 6th satellite iii. will suffer eclipse at llh. 26ra. 14s. 

 P.M. On the 7th satellite ii. will pass off Jupiter's face at 

 Oh. 58m. P.M. On the 9th satellite 1. will disappear in 

 eclipse at lOh. 69m. 13s. P.M. On the 10th the shadow of 

 satellite i. will leave the planefs disc at lOh. 17m. p.m., followed 

 by the satellite casting it at lOh. 33m. P.M. On the 14th s,atellite ii. 

 will begin its transit acro.-s Jupiter at 9ti. 46m. p.m. ; its shadow 

 will pass off at llh. 53m, as will the satellite itself 12 minutes 

 after midnight. On the 16th satellite i. will be eclipsed at 

 12h. 53m. 8s. P.M. On the 17th the shadow of satellite i. will begin 

 its transit at 9h. 59m. P.M.,as will the satellite itself at lOh. 6m. The 

 shadow will leave Jupiter's opposite limb at 12h. 12m. P.M., and the 

 satellite .at 12h. 17m. On the 18lh satellite i. will reappear from 

 occultation .at 9h. 36m. p.m. On the 21st the .sh.adowof satellite ii. 

 will enter on to Jupiter's limb at llh. 58m., followed 2 minutes 

 later by the satellite casting it. On the 24th tlie shadow of 

 satellite iii. will begin its transit at 9h. Im. P.M., the satellite itself 

 leaving the opposite limb at lOh. 29m. P.M., and the shadow at 

 lUh. 56m. Then, at llh. 50m., the transit of satellite i. will begin, 



followed by that of its shadow at llh. 53m. P.M. On the 25(h 

 Sitellite i. will be occulted at 9h. 8m. p.m., reappearing from eclipse 

 at llh. 23m. 37s. On the 30th, satellite ii. will reappear from 

 eclipse at llh. 1 2m. lis, P.M. Kinall)', on the 31st satellite iii. will 

 begin its transit at 12h. 12m., and its sliadow follow it at 

 12h. 59m. P.M. Saturn is rapidly approaching the west, and must 

 be looked for the moment it is sufficiently dark to be seen at all. 

 He is in Cancer, to the west of the Pr.-csepe ('• The Stars in their 

 Sea.sons," map iii.). Uranus should be looked for not much 

 later than lOh. 30m. P.M. to be seen to the greatest advan- 

 tage. He i-i in Virgo (■' The Stars in their Seasons," map 

 v.). VVe have spoken above of his conjunction with Mars 

 on the night of the 5th. Neptune is absolutely invisible. The moon 

 enters her last quarter at llh. 47'lm. P.M. on May 2, and is new at 

 Ih. 23om. A.M. on the 11th. She enters her first quarter at 

 llh. 51m. P.M. on the 18th, and is full at Ih. 40'lm. in the after- 

 noon of the 25ih. Four occultations of fi.xed stars by the moon will 

 happen at fairly convenient hours during May. The first occiirs 

 on the 16th, when the 6th magnitude star d' Cancri will disappear at 

 the moon's dark limb at llh. 5m. P.M. at an angle of 74° from her 

 vertex. It will reappear at her bright liiub at llh. 45m. P.M. at an 

 angle from her vertex of 337°. On the 20th b Virginis, also a star 

 of the 6th magnitude, will disappear at the dark limb at 

 12h. 57m. P.M. at an angle of 139° from the moon's verte.x. It 

 will not reappear until Ih. 44m. the next morning at the bright 

 limb at a vertical angle of 254°. On the 24th tj Libr;e, a 6th magni- 

 tude star, will disappear at the dark limb of the moon at 

 lOh. 52m. P.M. at an angle of 128° from her vertex, reappearing 

 at her bright limb at llh. 23m. P.M. at an angle fruiu her vertex of 

 181°. Las ly, before the moon rises on the 27th, she will have 

 occulted 31 Sagittarii, also a 6th magnitude star, with her bright 

 limb. The star will reappear at her dark limb at llh. 23ra. P.M. at 

 a vertical angle of 240°. When our notes begin the moon is in 

 Sagittariu.=, but passes into Capricornus at 10 o'clock to-night (•' The 

 Seasons Pictured," plate xxi.). She takes precisely forty-eight hours 

 to cross Capricornus, and at 10 p.m. on the 3rd emerges in Aquarius. 

 She is travelling through .\quari us until Ih. A.M. on the 6th, when she 

 enters Pisces ("The Seasons Pictured," plate xxii.). As she traverses 

 I'isces, at 9 P M. on tlie 6ih she enters Cetus. It is not until 

 6h. 30m. A.M. on the 8lli that she re-enters Pisces. At 5h. 30m. A.M. 

 on the 9th she for the second time plunges into an outlier of Cetus, 

 and when she finiilly quits this at Oh. P.M. on the 9th it is lo come 

 out in Aries. She remains in Aries until Ih. A.M. on the 11th, when 

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

 she journeys over Tauru.s, she arrives at Ih. A.M. on the 14th at the 

 western edge of the northern prolongation of Urion. This she has 

 crossed by noon, and come out in Geiuini (" The Seasons Pictured," 

 plate xxiv.). It takes her until lOh. AM. on the 16th to cross 

 Gemini, and at that hour she enters Cancer. She leaves Cancer 

 for Leo at Ih. A.M. on the 18th. It is not until 4h. P.M. on the 20th 

 that she passes from Leo to Virgo (" The Seasons Pictured," plate 

 XXV.;, and it is 4h. P.M. on the 23rd before she has completed her 

 passage thiough the last-named great constellation and entered 

 Libra ("The Seasons Pictured." plate xxvi.). Traversing Libra, 

 she arrives at 7h. A.M. on the 25th on the confines of the narrow 

 northern spike of Scorpio, having crossed which she, at 2h 30m., 

 emerges in Ophiuchus. Here she remains until 2h. A.M. on the 

 27th, when she enters Sagittarius. By 7h. A M. on the 29th she has 

 completed her passage over Sagittarius and entered Capricornus 

 (■'The Seasons Pictured," plate xxi.;. Here she continues until 

 5h. A.M. on the 3Is*, when she crosses into Aquarius. She is still 

 travelling through Aquarius at midnight on the 31st. 



Contents of No. 30. 



PAQE 



Tlie Kinsliip of Meu and Apes, &c. 



By Professor E. S. More 121 



Weighing tlie Earth liS 



Tnal. Bv W. Miittieu Williams 12.5 



1 iftingGi oat Weights 127 



Notfs on Americanisms 120 



Tlie starj ototlier Times 130 



Evolution of Laugaage. By Ada S. 



Ballin 1.12 



Strange Whist Hand 133 



.Meteor BittU of the Universe 1 34 



Tne American Tiottinp Horse .... 135 



Oj'ster Protect ion 135 



The Ancient History or the 



Maori 135 



Royal Victoria Hall 13,i 



fiossip. By Richard A. Proctor 1H7 



Reviews 140 



The Face of the Sky for April. 



By F.R A.S 142 



Our Whist Column. By " Five of 



Clubs" 142 



Our Chess Column. By " Me- 



pliisto " 143 



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