580) OBSERVATIONS ON THE ZODIACAL LIGHT. 



No. 293. 



FEBRUARY 12th, 1855: EVENING. 



Lat. at 8/1., 35 41' S. : Lou. 73 59' W. 



Sun set at GA. 53^m. 

 Stronger and Diffuse Light at 8h. 45m. 

 Zenith point at 6A. 15'., Lat. 56 29' S. : Lon. 83. 



Clouds, since my last date, have prevented observations until this evening, when, at 8 1 ' 15 m , I was able to have 

 one; the sky favorable above, but with passing clouds below. I thought that the lower or right-hand boundary <>!' 

 the Stronger Light, which was well defined, had evidently slid over towards the left, since my last observation. The 

 other boundary was not so decidedly marked in the sky, but it also appeared to have moved on, as may be seen by a 

 comparison of the charts. The lower boundary of the Diffuse could not be got, owing to clouds. After this obser- 

 vation, the sky was clouded over. 



