322 OBSERVATIONS ON THE ZODIACAL LIGHT. 



No. 161. 

 MAY 29th, 1854 : EYENINO. 



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



Sun set 7h. 19m. 

 Stronger and Diffuse Light at 9A. 10m. and 10A. 30 m. 



About 9'' 10 ra the moon sunk behind some clouds near the horizon, and I was able to get an observation. Tbe sky 

 was very clear; "but the evening Zodiacal Light, though very distinct, has now lost much of its brightness, our latitude 

 being high, and the ecliptic having a low angle with the horizon. The brightest part was below the zigzag line, hut 

 still the Stronger Light could be traced up, as given in the chart. At 10'' 30" 1 the Light could still be made out, 

 though it was dim. The Diffuse Light was now particularly faint scarcely perceptible. I have given the outlines 

 as they appeared to be. At II 1 ' 20 m there seemed to be something of it left ; but I could not be certain. 



