344 OBSERVATIONS ON THE ZODIACAL LIGHT. 



No. 171 



JUNE 3Uth, 1854: MORNING. 



Lat. at 3A., 28 22' N. : Lon. 130 IS E. 



Sun rose oh. Him. 

 Stronger and Diffuse Light at 2A. 30m. and 3/i. 20m. 



The sky this morning quite hrilliant, and excellent for observations. At 2" 30 the Zodiacal Light very distinct ; 

 but the upper end is dimmed off to such a degree, that it is difficult to get boundaries there. I scarcely knew, this 

 morning, whether to put down boundaries to the Diffuse Light or not, they were so indistinct and uncertain ; but 

 I have done the best I could. The difficulty was still further increased by the brilliancy of Jupiter. As dawn 

 approached, say at 3 h 25", the lower end of the Stronger Light grew very bright, but still kept strictly within the 

 boundaries given. This lasted till about 3" 40"', when the light spread, and dawn had come. 



