Rev. C. S. Lyman on the Auroral Bow of June, 1852. 57 
erly end, but if I remember correctly it was near gamma Leonis; and 
atan earlier period it probably reached a lower point. The easterly 
part below the altitude of about 35° was hidden from my view by trees 
and buildings. 
At 95 52™, the bow is central on the star alpha Corone Borealis. 
“ * 53 405, the southern edge touches epsilon Bootis, (Mirac.) 
“ © 54 20, the bow is fading, and is now central at a point mid- 
way between Arcturus and Mirac: its breadth here 
is about one-fifih of that distance. 
“ © 57 0,the bow has now disappeared, except a segment 
about 80° long in the northwest. This extends from 
a point about one-third of the distance from zeta to 
amma Leonis in a gentle curve, convex towards the 
north, expanding to a breadth of 3 or 4 degrees at 
the upper part, and terminating at a point midway 
between beta Leonis and Cor Caroli. This segmeut 
remained visible about a minute without much change 
position 
* * 59 0, no trace of the bow can be seen. 
The meridional part of the bow, while I saw it, had a motion south- 
ward, but at what rate could not be well determined from so brief an 
observation. Moreover, the changing character of the sinuosity near 
the meridional part of the bow embarrassed the observation on the 
motion towards the south.” 
Mr. Watson’s observations are thus detailed in a letter to Mr. 
Herrick, dated East Windsor Hill, June 15, 1852. 
auroral light, fading from the horizon to an altitude of 30°, the stream- 
ers becoming less and less frequent. At 9h. 4m. a bright streamer 
Covers 3-and 7 of the Bear, and at 9m. waves of light are distinctly 
Seen in the north, 
‘The arch commenced at 9h. 23m. with a bright ray to the S. of E, 
. 
pi 
Behiabs: 
the arch having jth of its width below the southernmost. This, if I 
ley ber . . . 
