402 OBfflEHVATIO^TS Off THE ZODIACAL LIGHT, 



No. 201. 



AUGUST 22d, 1854 : MORNIHO. 



Lat. at 3/i,, U 46' N.: Lon. 117 II' E. 



Sim rase at 5A. 50. 



( I >,. d 



ight at ? i 3 

 (4 



) 



Stronger Light at ? i 3 > Diffuse 1A. and 



(4 i 

 Suu's Loa. 145. 



Was up at 1 o'clock, and found tlie Zodiacal Light quite distinctly marked ; the sky being very clear and favorable 

 for observations. At 2'' JHV", the Diffuse apparently as before, but it was very dim, especially at its upper end. The 

 sliding over of the Stronger Light, as seen at 4", is very remarkable, and I must give further attention to it ; it was 

 so singular, that I did not enter the boundaries of this hour on the chart until after long and very careful observa- 

 tions. I had noticed also, at 2'' :W", that the Light bad concentrated much; i. e. was much brighter towards the 

 lower edge, or right-hand boundary given for that time. There was no great change in the angle of the horizon, to 

 account fur this sliding over at 4''. The Diffuse Light was very dim this morning, except at its lower end. 



[18jG. I had not then thought of drawing the zenith lines, and I did not think of this till long after the above 

 date. They will account for the great sliding over of the boundary-lilies of the Zodiacal Light.] 



