50 ' OBSERVATIONS ON THE ZODIACAL LIGHT. 



No. 250. 



DECEMBER 8th, 1854 : EVENING. 



Lat. 38 2' N. : Lon. 122 7' W. 



Sun set at 4A. 36nt. 

 Stronger and Diffuse Light at GA. 30m. and TA. 30 HI. 



Sky remarkably clear and brilliant, and extremely favorable for observations. At 6 h 30 m the 'outlines were all 

 well marked, except the upper end of the Diffuse Light. At 7'' 30'" the Stronger Light -was dim, but its boundaries 

 were still pretty easily made out. 



