f>16 OBSERVATIONS ON TUB ZODIACAL LIGHT 



No. 258. 



DECEMBER 18th, 1854 : EVENING. 



Lat. at 8A., 31 43' N. : Lon. 120 3' W. 

 Sun set, 4h. 55m. 



Stronger Light j g A- ^ m ' | Diffuse, 7k. 45m. and 8h. 30m. 



Cloudy till near V 45 m , when the sky became favorable for observations. I thought, this evening, that there were 

 probably pulsations ; and for a while made record of what seemed to be such : but all was so uncertain, that I feel 

 unwillrng to copy them, but concluded to wait for further observations. They seemed to have a and b for their 

 boundaries: and finally, at 8 h I" 1 , the Light seemed to remain permanently at c its boundaries permanent, but 

 pulsations in intensity still continuing. At 8 1 ' 30 m it was still distinct, though dimmed considerably. 



