453 



throughout the most brilHant. The changes now succeeded 

 each other so rapidly as to defy observation, the limits of the 



dark interior part continually altering, and at one time ap- 

 pearing as if half the arch were refracted from its place. 



"The arch continued to separate, and, as it were, fall to 

 pieces, the streamers diminishing in brilliancy until 10^ 17"^ 5% 

 when a broad column rose from very near the horizon, on 

 the eastern side. 



"This column appeared gradually to melt away, when 

 a very brilliant streamer arose nearly in the same place at 



2q2 



