Prof. Lyman on the Aurora of 1859. 391 
8. Observations at New Haven (lat. 41° 18’ 27"), by Prof. 0. S. 
ge YMAN of Yale College. 
sis above the northern horizon. At 745m this i nee 
the zenith ; at 7h 55™ it had passed 25° or 30° further south, and 
the marginal portion formed for a few minutes, an irregular belt or 
zone made up of evanescent fragments of arches, intermingled with 
streaks and patches of auroral light. No distinct bow, however, was 
at any time formed. At 8°15™ this portion had nearly vanis 
and the southern edge was only 3 or 4 degrees below alpha Lyra, 
then near the meridian. Eight minutes later the edge touched 
alpha Aquile and in three minutes more was about 10° south of 
it. This southern margin was at times quite definite, and as it 
moved gragually towards the south the following notes were 
made of it at the time—the altitudes (near the meridian) being 
measured with a sia quadrant, and probably in error less 
than half a degree 
At 8h 27m alt. of edge 28° 
9 20° 30’, — and regularly arched. 
15, bri 
15 45, brie broad, “ise well defined. 
14 0, at star Epsilon S agittarii. 
14 0, bright, and well defined. 
12 30, bright, and very well defined. 
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10 40, nearly the minimum alt. 
12 45, receding, 30’ or 40’ below star # Sag. 
10 30, second arch, first 4° or 5° above. 
ite Hedin: 12 30, bot edge well defined—at star ¢. 
1g. ie 2 30, edge at same star. 
At this time a small bright horpaneel § cloud of light some 2° 
wide and 5° or 6° in length, and pointed at each end, formed 
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rapidly, near the meridian, in the open sky just below the arch 
yes “altita de of 9° 50’, and ‘oor Be io F tke west parallel 
to the ao through .a distance of 15 ee re Ye to 
view behind t trees, s. about a minute, Ye et ate, after its forma- 
tion, Ths cloud appears to to have been crentieat with one seen 
by Pro A oe C. Twining at West Point. 
The s silon Sagiltarit, referred to above, is found by 
awneutenes to have had an altitude at gh 33™ of 13° va wan 
then 45™ past the meridian. Its altitude at 8 50™ was 12° 58’. 
When on the meridian at 75 48™ it was 14° 18’. 
