S62 OBSERVATIONS ON THE ZODIACAL LIGHT. 



No. 181- 



JULY 15th, 1854 : EVENING. 



Lat. 25 9' N. : Lon. 121 46' E. 



Sun set 6A. 48m. 

 Stronger and Diffuse Light at 8, 9, and 10 o'clock. 



At 8 o'clock the Zodiacal Light was quite distinct ; but the upper end of the Diffuse was not easily made out; at 

 9\ the latter was better defined. The sky was remarkably brilliant. The upper end of the Stronger Light was 

 comparatively dim. I have given its boundaries, after very careful study. About 8 h 3CP, this Stronger Light 

 seemed to have a rapid ascent, and brightening, from its former position at 8 h . At 10" the Stronger Light had 

 dimmed very greatly, and its upper end was scarcely distinguishable from the Diffuse Light, which now was very 

 decided and well denned. At 10" SO the Stronger Light could not be defined at all, and the Diffuse could scarcely 

 be made out. 



