f)80 OBSERVATIONS OH THE ZODIACAL LIGHT. 



No. 290. 



FEBRUARY 7th, 1855: EVENING. 



Lat. 33 1'S. : Lon. 71 41' W. 



Sun set 6A. 55m. 



Stronger and Diffuse Light at 8h. 20m. and 9A. 15m. 

 Zenith point at 8A. 20m., Lat. 56 29' S. : Lon. 80. At 9h. 15m., Lat. 56 29' S. : Lon. 100. 



The night clear and very fine for observations. The twilight is very long, hut at 8 1 ' 10 I could easily make out 

 the Zodiacal Light ; however, could not get reliable boundaries till 8" 20 m . At 9 h 15 m the Light was dim, hut still 

 was easily distinguished and well marked. At that 'hour I could not get the lower boundary of the Diffuse Light. 

 At 10" I could see a slight tinge in that part of the sky, evidently the Zodiacal Light ; but I could not get bounda- 

 ries ; and, in fact, it was only a slight, faintly marked blush in the sky. 



