VARIATIONS OF APPEARANCE. 



Fig " 12 - Oc 



since the preceding night. The tail (not included in the drawing) 



measured very nearly 2. 



The flame consisted of two 



parts, one resembling that 



seen on the 8th, and the 



other issuing like the jet 



from a hlow-pipe in a di- 



rection at right angles to 



it. The figure represents 



the nucleus and flame as 



they appeared at 21 h side- 



real time, with a magnify- 



ing power of 254. 



93. The appearance of 



the following night is shown 



on the same scale in fig. 



13. The tail, which still 



measured nearly 2, was 



now much brighter, being 



visible to the naked eye, 



notwithstanding strong 



moonlight. The coma was 



evidently broader than the 



tail. The flaming nucleus 



is represented in the draw- 



ing as it appeared under a 



magnifying power of 86, 



with a field of 18' diameter, 



the entire of which was 



filled with this coma. The 



diameter of the latter must, therefore, have been more than 18'. 



The drawing was taken at 21'. s. t. 



94. The comet is repre- 

 sented in fig. 14 (page 202), 

 on the same scale, as it ap- 

 peared on the night of the 

 12th. It appeared at O h 25 ra 

 s. t. for a short interval in 

 uncommon splendour, the 

 nucleus and flame, however, 

 alone being visible, as repre- 

 sented in the drawing. The 

 greatest extent of the flame 

 measured 64"- 7. Its appear- 

 ance was most beautiful, 



]3 _ Qct 



