52 1 OBSERVATIONS ON THE ZODIACAL LIGHT. 



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DECEMBER 20th, 1854 : 



Lat. at 8h., 26 51' N. : Lnn. 1 15 27' \V. 



Sun set at 5/i. ?wi. 

 *. 30m. ) 



Stronger Light at ? 7 3 t > Diffuse, G/i. 3()7. and 7/i. 30;. 



and midnight. ) 

 Sun's Ion. 2(58 20': Zenith point at midnight, Lat. 4 45' N. : Lon. 89. 



( 6* 

 t ? 7 

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At 6 h 30 the Zodiacal Light was very strong, but I could see no pulsations, though the night was favorable for 

 observations. Watched from 7" 20 m to 7" 45 m for pulsations, and thought, at times, that there were such changes ; 

 but all was so uncertain, that I feel linwilling to make further records of them. At 7" 45 m the Light was still bright 

 and strong. Went out again at 9 o'clock, but found the sky all clouded over. 



Was on deck again at midnight, and found the Zodiacal Light simultaneously in the E. and W. In both directions 

 I thought it was very decided, though faint; the eye easily discovered and recognized it, I have given its boundaries 

 in the chart. At 12' 1 45 m this western Light was still distinct. 



(For both eastern and western Light, see morning chart 21st.) 



