OBSERVATIONS ON THE ZODIACAL LIGH7, 



No. 16G. 



JUNE 21st, 1854: EVENIKG. 



Lit, 34 39' N.: Lon. 138 59' E. 

 Sun set 7/(. llm. 



( Sh. 5dm. 



Stronger and Diffuse Light at< !> 

 < 10 



Clouds ever since last date, until this evening, when the sky was very favorable for observations. Owing to the 

 long twilight, however, I could not get boundaries until 8" 50'" ; at 9 o'clock the darkness had increased, and wider 

 boundaries were, consequently, visible. At 10'' the Light hail still considerable brightness ; but the ecliptic had 

 sunk so much towards the horizon that it was difficult to get reliable boundaries : I believe, however, that those given 

 may be depended on. 



