280 



OBSERVATIONS ON THE ZODIACAL LIGHT. 



No. 140. 



APRIL 20th, 1854 : EVUNIHG. 



Lat. 34 411' N. : Lon. 133 59' E. 

 Suu set (Vi. 3 1 HI. 



( 7 50/n. ) 

 Stronger Light J 9 > Diffuse 8A , 9A,, and IDA, 



( 1" " ) 



Last night cloudy. This evening very clear and bright. \Wchel for the first appearance of the Zodiacal Light. 

 At Y ; ' 44" 1 it showed itself; but it did not give reliable b >;iu laries till 7 1 ">0". The Stronger Light evidently moves over 

 towards the left as the ev.iuin^ alvi ices; pr >'t.ibly owing to the change in the obliquity of the ecliptic. At 10 h , the 

 boundaries appearel to be the same as at 9'; but it was difficult then to get the bounds of the Stronger Light, 

 especially on the left, or south. The Diffuse Light is now very bright, particularly towards the southern side, 



