630 OBSERVATIONS ON THE ZODIACAL LIGHT. 



No. 315. 



APRIL 9tb, 1855: EVENIKG, 



Lat. at 8/., 11 ]2' N. : Lnn. 45 51' W, 

 Sun set at 6h. 7m. 



(-7A. 30/n. 1 



Stronger Light at <! g ^ ) Diffuse 8A. to 9A. 50m. 

 19 50 ] 



Clouds since last date (4th) until this evening. Sky, to-night, very fine for observations, except a few passing 1 

 clouds, which occasioned, however, no material interruption. The Zodiacal Light showed itself at T h 12'", hut I was 

 not able to rely upon its boundaries till 7" 3CP. Its course across the Milky Way is now quite marked and decided, 

 in the case of even the Diffuse Light; but the upper extremities of both are not well denned. Those (the upper) of 

 the Stronger Light became better defined as the night advanced : of the Diffuse Light, not so well. At 9 h 50 m , the 

 Light was distinctly marked, though now much dimmed, and its boundaries barely reliable. 



