58 Rev. C. 8. Lyman on the Auroral Bow of June, 1852. 
its place, not as a whole, but first the portion _ and then that east of 
the zenith, and in such a manner as to form curves at — points, 
while the lane portions remained nearly ecient At 9h. 34m., 
Arcturus is in its centre, and at 36m. the east portion has also moved 
south its half. At 42m., Arcturus is upon its north edge and the whole 
has apparemy meg south its width, forming again a regular arch. 
At is yet entire but fainter and fades gradually away, 
from the ole ed. At 463m. a vestige yet remains in the west 14° or 
2° wide, its north edge well defined upon § Leonis. It moves north its 
width and is wholly gone at 9h. 51m. The arch in the north horizon 
continued with few or no streamers till after 1] p.m. My watch had 
probably an error of some minutes.’ 
In a subsequent letter Mr. Watson remarks, “TI enclose you 
another set of observations made entirely independent of mine, 
by Mr. T. C. P. Hyde, a student of the Seminary.” Mr. Hyde's 
notes are as follows: . 
* Auroral streamere-—wisible early in the evening pore and con- 
tinued most of the time till 103. Direction paige heed om an arch low 
in the north toward a point 15° or 20° south of the zenith. Length 
varying from 6° or 8° to 380° or more. Slight coronal appearances, 
not far ae 8 Pp. M. Rhaewarte a column or belt appeared from 
E.N.E. to W.S.W., through a point south of the zenith. oy 
(time sat eae} the northern border of the light passed through. the 
south edge of the Northern Crown and its southern was near Arcturus. 
It was slowly drifting south : left the Northern Crown about 9-40, had 
Arcturus near its centre at 9°50 and in its northern margin by 10. 
About 9°50 the’ southward motion of the western end of the belt was 
accelerated, so that the belt became concave to the south. At 10°10, 
the west end ‘was perhaps 3° or 4° farther south than it would have 
been by a motion uniform with the central and east portion. I did not 
observe its subsequent return to the northward. At 10-15, a faint line 
of light could be traced, marking the original position of the belt, sep 
arated from the larger belt which had moved south, by a dark interval 
of perhaps 4° or 6° in width.” 
Professor ee ene of Trinity College, Hartford, ina _ letter 
to Professor Olmsted, which he has kindly permitted the writer 
to use, describes the bow as having its southern limit, at a quarter 
to ten, mean time, not more than a degree distant from Arcturts. 
“T noticed,” he remarks, ‘that the southern margin was quite 
near to Arcturus, and immediately obtained the time from a wate 
belonging to” Mr. Bushnell, a divinity student. The time was @ 
quarter to ten. For two or three minutes, at least, there was 10 
perceptible motion in the arch southward, near Arcturns, Mr. 
Bushnell is confident that no portion of the arch reached as 
north as the crown, that the northern limit was clearly south af 
it.” “We are agreed that the distance of Arcturus from the 
(at the time specified. peeie could n not t have exceeded one-f 
part of the width of the bel 
