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aspect of tbe Ibeavcus: 

 apiil, flDa^, 3unc, 1890. 



By a. Graham, M.A., etc., Cambridge Observatory. 



THE most striking phenomenon which can be predicted for 

 this Quarter is the Annular EcUpse of the Swi on June 17. 

 Seen from the centre of the earth on that day at noon, the 

 sun's diameter subtends an angle of 31 min. 33 sec, that of the 

 moon only 29 min. 53 sec. ; so that, even where the moon will 

 appear centrally over the sun's disc, a narrow margin of the sun 

 will appear as a ring of light round the edge of the moon : hence 

 the origin of the title Annular Eclipse. This Annular Phase 

 begins on the earth generally at 8/z. 2m. in the morning, Green- 

 wich mean time, in the Atlantic Ocean, longitude 32*^ 30' west of 

 Greenwich, and latitude 5*^ 8' north, crosses the northern part of 

 Africa, the Mediterranean Sea, and the south of Asia, and ends 

 12 minutes before noon near the east coast, in longitude [oi° 25' 

 east, and latitude iS*^ 46' north. A partial eclipse will be visible 

 for more than 30 degrees north and south of this central line, 

 including the whole of Europe and a large part of Africa and 

 Asia. x\t Greenwich the phenomenon begins at 8/^. 20;;/., and 

 ends at \oh. 31;//. in the morning; at 9//. 2yn. a little over one 

 third of the sun's diameter will be covered. 



The Moon will be full on April 5 at 9/?. 24;;/. morn., May 4 at 

 9//. Q)m. aft., and June 3 at 6//. 34W. morn. ; Last Quarter, 

 April 12, lok. 53//^. morn.. May 11, 4/^. 22;;/. aft., June 9, 9//. 

 50/;/. aft; JVeiv, April 19, 8//. 5/;/, morn.. May 18, 8//. 19;;/. aft., 

 June 17, 9/^. 58;;^ morn. ; Fi7'st Quarter, April 27, 4//. 52/;^. morn., 

 May 26, lo/^. 34W. aft., June 25, ih. ^^in. aft. 



She will be in Perigee, or nearest to the earth, on April 13 at 

 Gh. aft., May 8 at loh. aft., and June 5 at loh. morn. , and in 

 Apogee, on April 26 at 6h. aft., May 24 at noon, and June 21 at 

 ^h. morn. 



On June 29, one minute before 10 in the evening, a double 

 star in Scorpio, second magnitude, will disa[)pear behind the moon, 

 and will reappear at 13 minutes past 11. 



