256 



OBSERVATIONS ON THE ZODIACAL LIGHT. 



No. 128. 



MARCH 20th, 1854: EVENING. (Monday.) 



Lat. 35 20' N. : Lon. 139 42' E. 



Sun set OA l^m. 

 Stronger Light ~h. 30m., &c., to 94. : Diffuse 74. 30m. to 94. 



This was a fine evening for observations, and I was very watchful to see whether there would be pulsations or not. 



Sun set at G" 74, m . At 7" 14 m , the Zodiacal Light was visible, but gave no perfectly reliable boundaries, 

 got them both tor Diffuse and Stronger Light ; the latter was then at b. 



At 7" 30"' 



It. in. 



At 7 :>:-;A, at b, and bright. 



7 354, at a, and dim. 



7 3fiJ-, at b, and bright. 



7 384, still do. 



7 l-i'J, at a, and dim. 



7 4(H, do. do. 



7 414, at b, and bright. 



7 44, do. do. 



7 46, at a, and dim. 



7 47 : dim. 



A. 771. 



At 7 48 J, at 6, and bright. 



7 50, do. and ignite bright. 

 7 52, at c, do. do. 



7 554, do. and very blight brighter than at any 



time before, this evening. 



8 0, as at last, and seems to be permanent. 



8 24, to b, and seems to be pulsating; but this is 



very uncertain. 

 8 8, seems to be permanent. 

 8 12, same as last. 



7 474., brightening. 



At 9 [10?] o'clock, could see the Light very well to the Pleiades, but could not get its boundaries beyond that, 

 reli ibly. These pulsations are not as striking as a month ago, and sometimes are difficult to be made out. The 

 Stronger Light not so strong as formerly. 



