316 OBSERVATIONS ON THE ZODIACAL LIGHT. 



No. 158. 



MAY 22d, 1854 : EVENING. 



Lat. 41 47' N. : Lon. 140 43' E. 



Sun set "ih. 14,Jm. 

 Stronger and Diffuse Light at 10/j. 1'Jm. 



Sky pretty clear from haziness at 9 h , except towards the horizon ; quite clear in the zenith. A change in the 

 appearance of the Stronger Light, which I have alluded to in recent entries, leads me now to make a slight change 

 in the mode of mapping. This Light is quite strong within the boundary a a (see chart) as strong as the Stronger 

 Light has usually been. Above that, although evidently a continuation of the same light, it is so dimmed that it 

 can scarcely be recognized as a continuation of that Stronger Light ; and I have thus given two full lines for that 

 hour (9 o'clock). At 10'' 12 m , the Light was very dim ; but I thought I could make out its boundaries as in the 

 chart. 



