604 OBSERVATIONS ON THE ZODIACAL LIGHT. 



MARCH i6th, isssi 



Lat. 22 55' S. i Lon. 43 6' W. 



Sun rose at 6A. 6m. 

 Stronger Light at 3A. lum, and 4h.l Diffuse at 2A. IFm. and 4h, 



A beautiful clear morning, and everything favorable for observations, I was on deck immediately after 2 o'clock, 

 and found the Zodiacal Light very strongly marked; but, from the interference of the Milky Way, giving a boundary- 

 only on the right hand or southern side, This one was well marked (as at a a in the chart), with a stronger patch 

 of light at b. But, although I then took the former to be the Stronger Light, it was doubtless only of the Diffuse 

 Light ; for, at 3 h 15" 1 and 4 h , the boundaries of the Stronger Light were decidedly as those given in the chart, while 

 a a now as decidedly was the limit of the Diffuse Light. Indeed, at the earliest of the morning, as well as at the 

 latest of the evening observations, the Stronger and Diffuse Lights can scarcely (if at all) be distinguished from each 

 other the former being dim, and the latter stronger than at the other times. 



The moon rose about 4 h . Jupiter's light is now getting to be troublesome in the morning observations. 



