194 OBSERVATIONS ON THE ZODIACAL LIGHT. 



No. 97. 



JANUARY 3d, 1854 : MOKMNII. 



Lat, 22^ is- K.: Lou. 114 10' E. 



Sun rose GA. 43m. 

 Western Zodiacal Light at midnight and 1 o'clock. Eastern, Stronger Light at 2 A. Om. Diffuse ll/i. 30m. 



3 30 Midnight 



4 30 10 

 55 20 



5 10 3 30 



4 30 



5 10 



As mentioned in the annotations of last evening, the eastern Zodiacal Light showed itself at half an hour before 

 midnight, very faint, but still visible. Its northern limits were easily made out, but there was a dilliuiilty iu getting 

 those towards tlie south; also it was difficult to say where it terminated above. At 12", it was as bright about 77 

 Leonis Majoris (a a in the chart) as the Milky Way close to Betelgueux. At 1", it was more distinct, but still dim. 

 The night was remarkably favorable for observations. The Stronger Light showed itself at 2'', but was dim. I was 

 puzzled all through the morning's observations, by what seemed to be a narrow streak of the Diffuse Light, bounded 

 by Pollux on one side, and the ecliptic on the other, and continued above Pnesepe, seemingly to the Milky Way. 

 But this was all very uncertain. Still it forced itself on my notice again and again. I did not know what to make 

 of it. It seemed to be, and seemed not to be. Between 5" 5'" and 5" 10'", the Stronger Light dropped down as shown 

 in the chart. I watche'd it as it evenly but rapidly sunk; what remained also losing half its late brilliancy. After 

 this, there seemed to be pulsations in the strength of this Stronger Light; it kept its boundaries as at 5'' 10'", but 

 seemed to increase and to fail in strength at intervals of five minutes or so; never, however, getting to the intensity 

 which it had just before 5" 5 m . Dawn at 6" 30'". 



