412 



OBSERVATIONS ON THE ZODIACAL LIGHT. 



No. 206. 



AUGUST 25th, 1854 : EYEKIHO. 



Lat. at Sh., 20 47' N : Lon. 114 32' E. 

 Sun set at (i/i. 19n. 



Stronger Light at s g ^"' > Diffuse Light at 8A. 30m. 



Clouds since yesterday a. m. until this evening. Was prevented by the same cause, on this occasion, till 7 h 42 m , 

 when, the clouds leaving the sky very favorable, except quite at the horizon, I had a good observation, and looked 

 carefully to see if there were pulsations. The records I took at the time are as follows : 7' 1 42"' being at a a, as in the 

 chart. 



h. m. 

 At 7 47, at b, and bright. 



7 49, at a, and dim. 



7 50^, at b, and bright. 

 to 7 53, at do. do. 



h. m. 

 At 7 54, quite bright, and at b. 



7 55^, do. do. do. 



8 0, at b, and not so bright. 



8 Of, do. and bright ; and so it remained. 



I offer these notes of changes, however, with hesitation, inasmuch as these apparent changes were not clear and 

 decided, and of a fully satisfactory character. I give them as what they seemed to me to be. 



At 8 h 30 the sky was quite brilliant ; at 9" 30 m the boundaries were apparently the same as at last observation. 

 The Light was quite perceptible, but" 1 was, however, very dim at this hour. I had an observation of the eastern 

 Zodiacal Light at 11 o'clock (for which see next morning's entry 26th). 



