92 



Of tlie spots in this class, and which Mr. Pratt describes as easy, one 

 only. No. 16, was seen by Mr. Elger. This spot has a higher degree of 

 visibility than 22 in Class IV., " conspicnous ; " and this is perhaps another 

 indication that the \-isibility of No. 22 on May 13 did not wholly depend 

 upon the state of the earth's atmosphere. 



The normal degrees of visibility in this class range from ^294 to -036, 

 furnishing a strong indication that they were seen in consequence of a fine 

 state of the earth's atmosphere. 



Class VI. contains five spots, viz. Nos. 9, 30, 24, 31, 21. 



Vis. 

 •222 

 •139 

 •057 

 •031 

 •026 



The same remark may be applied to this class as to Class V., viz. that the 

 spots were seen in consequence of a fine state of the earth's atmosphere. 

 The two spots Nos. 9 and 30, with comparative high degrees of visibility, 

 are xeij frequently seen by Mr. Glcdhill, and doubtless were not seen by 

 him in consequence of the bad state of the atmosphere at Halifax. 



Class VII. contains six spots, viz. Nos. 25, 7, 10, 2, 0, 12. 



In addition to the above, Mr. Elger frequently glimpsed No. 32. The 

 WHOLE of the above sj^ots, as well as the strcciJcs recorded by Mr. Pratt, were 

 observed three separate times at intervals of about twenty minutes. The 

 majority was seen much oftcner. 



The following spots were not seen on the evening of May 13 : — 

 Spot: 11. 34. 8. 15. 33. 27. 26. 28. 35. 

 Vis.: ^144 ^026 -015 ^015 -010 -010 ^005 ^005 •OOo 



"With the exception of spot No. 11, which is frequently seen by Mr. 

 Gledhill, these spots were doubtless concealed by or, rather, required a still 

 finer state of the atmosphere to bring them out. It is difficult to say why 

 ^r. Pratt did not detect spot No. 11 when he saw thirteen sjiots with lower 

 degrees of visibility. It is one of those spots to which special attention 



