fiafte6*Bge Ifltgtbtlttg ot Supiter's Satellites us 



about 30 degrees, and the azimuth about west. There 

 was no moon, and twilight was faint. As III could 

 not be more than about four minutes away from the 

 planet's limb, I think that probably III and IV were 

 seen as one object." 



This observation strikes me as being a very sugges- 

 tive one, because of its having been made just before a 

 fine auroral display. May not the two circumstances 

 be co-related, in that the auroral or electrified state 

 of the upper atmosphere may have resulted in some 

 exaltation of the light of the satellites seen by Mr. 

 Levander and his pupils? There are instances, I 

 believe, of the light of comets and even of nebulae 

 having been apparently so exalted by such atmos- 

 pheric conditions. 



Mr. Charles Lewis Brook, of Meltham, Huddersfield, 

 has stated that on May 6th, 1896, at about 9.45 p.m., 

 he saw Satellite III at its western elongation. There 

 was no moon, but Mr. Whitmell thinks that probably 

 the last remnant of twilight was present. The satellites 

 and planet were arranged from east to west thus : 

 IV, I, II, Planet, III. Jupiter was in opposition on 

 January 24th, and about the date of the observation 

 was distant from the earth about 5-4891 units, and 

 was in declination about 20 degrees 26 minutes N. 

 The altitude was about 30 degrees. The evening in 

 this case was a very clear one. Mercury had been 

 easily visible until its setting. Satellite III would be 

 about four minutes away from Jupiter's limb at 

 maximum elongation. 



Mr. Walter Parsons, of Horsforth, Leeds, also 

 supplied Mr. Whitmell with the details of a naked-eye 

 observation of a Jovian satellite. This was made in 



