380 OBSERVATIONS ON THE ZODIACAL LIGHT. 



No. 190. 



JULY 25th, 1854: EVENISO. 



Lat. at Sh., 25 N. : Lon. 120 28' E. 



Sun set 6A. 44. 

 Stronger and Diffuse Light at Sh. J5m. and 9A. 



Watched to see the first appearance of the Zodiacal Light. In the portion of the sky immediately over the sun, 

 now set, there lingered a reddish light till near 8 o'clock, when it faded rapidly away, and then a light, which had 

 just before begun to turn upward towards the left, became soon developed as the Stronger Zodiacal Light. Tliis,- 

 however, did not reach its full height till at 8" 15 m , when I took its boundaries. It now had a more gradual ascent, 

 as the evening passed, till at 9 h , its boundaries were up to a and ;3 Libra?. At 9 1 ' the Stronger Light had dimmed 

 considerably, and soon after it was scarcely, if at all, distinguishable from the Diffuse Light. At 10" the latter was 

 discernible, but I could not get reliable boundaries. 





