588 -OBSERVATIONS ON THE ZOOIAHAL LIGHT. 



No. 294. 



FEBRUARY 19th, 1855: EVENING. 



Lat. at 8A. 45m , 51 57' S. : Lon. 75 58' W. 



Sun set at 7A. 14m. 



Stronger and Diffuse Light at 8fi. 45m. 

 Zenith point at 8h. 45m., Lat. 74 50' S. : Lon. 113. 



Clouds, ever since the last date, till this evening. The twilight now continues till a little after S" 30 m , and hy that 

 time the ecliptic has got to he so near the horizon that the evening Zodiacal Light is of a very douhtful nature. 

 The sky this evening was very clear, the stars shining with an intense brilliancy ; hut, although I tried very hard to 

 see whether anything reliable could be made out, I found nothing satisfactory. On the chart are the boundaries of 

 what seemed to me to be something like Zodiacal Light ; but I cannot consider those of the Stronger Light to be at 

 all reliable. That of the Diffuse is more certain : its. lower boundary was not to be seen. The difficulty was, 

 perhaps, increased by a very strong light in the southern sky, rising far above the horizon probably the blink of ice 

 about the southern pole. The air this evening was very sharp. At midnight the sky was still clear, and the stars 

 were bright to a degree that I never saw before. At 2", rose to get a morning Zodiacal Light observation ; but 

 before I could determine any thing about it, clouds swept over the sky : so they remained. 



