gg OBSERVATIONS ON THE ZODIACAL LIGHT, 



No. 49. 



SEPTEMBER 2d, 1853 : MORNING. 



Lat. 23^ 2' N. : Lon. 113 28' E. 



Sun rose 5/i. 45m. 



Stronger and Diffuse Light at 2h. 40m. and 3A. 30m. 

 EU'ulgent Light at 3A. 51; 



The moon now, once more, admits of morning observations of the Zodiacal Light. At 2'' 40 m this morning, it 

 was already very distinct. 



At 3 h 54 m , the Stronger Light became, almost suddenly, much stronger than before ; the limits of this new effulgence 

 being at the zigzag line a a. I supposed, at the time, that this was owing to the moon, then near its rising; but 

 when the moon showed itself, at 4" 18"', I saw that its light was too faint to produce such a result. At 4" 30, the 

 light spread laterally, and dawn had come. 



[1856. I afterwards became familiar with this effulgent light, as the book will show, passim.] 



