Stiles's Auroral Observations. 157 



1780, July 28. This evenint; wc belieUl a very sino-ular aurora. At 

 8'' 5'' P.M. Mr. At\vatcr saw the aurora in 8.E., ahift between 

 Lyra and Aquila. 



8" 24"'. A coruscation rose in the liorizon E. 20° S., antl in 

 that region a sheet of redness extending southerly, and a 

 sheet of Avhiteness adjoining northerly. Xone from the pole. 

 S*" 25"' to 28'". Sheet of duskish redness spread round from 

 east to south, or to 20° west of south, and so round the edge 

 of the horizon, to above half way up to the zenith. Indeed 

 the southern and especially the 8.E. part of the hemisphere 

 was generally atlected with aurora, while there was nothing 

 of it in the north. 



8'' 29"\ Considerably evanescent in some parts, remaining 

 in others. 



8'^ 45"'. Aurora arises in the north, and spreads not in cor- 

 uscations, but a sheet of whiteness uj) to the zenith. 



8'' 50"\ The whole hemisphere filled with liglit, E., W., 

 N. and S. visible through mackerel clouds. 



9'\ White aurora, extensive, covering to south of zenith. 

 9*^ 36"\ Streams of white aurora arising from N.W., pass- 

 ing by the easternmost star of Ursa Major, coming thence 

 over to the meridian, and perhaps ;30° S. of zenith, ranging 

 along on west side of Lyra and Aquila, and to south of Aquila, 

 forming a sheet of light covering those stars, yet so transpa- 

 rent that the stars appeared well through it. 



9*^ 40™. Streams vanish ; north aurora continues ; a black 

 cloud lying along under the pole star. 



9'' 50"\ Extends to Jupiter; luminous W. and E. 

 10'' 2™. The whole hemisphere overcast with large fleeces 

 of clouds, upon a luminous back ground. A large luminosity 

 due south, and perhaps 10° high. The north luminous though 

 without coruscations. 



lO*" 10™. Very luminous in N.E., or nearer east. 

 ■' July 29. Aurora Borealis. 

 ■' Aug. 2. Aurora Borealis. 

 ■' Sept. 21, ll*". A.B. as high as uppermost pointer in L'^rsa Major, 



next to and under pole star. 

 " Oct. 30, 10'\ A.B. around under the i^ole, 8° or 10° high. 

 " Nov. — . A small aurora. 



" Nov. 19, IC^. A.B. one-third up to pole star. After midnight 

 coruscations extend above the pole star. It maintained its 

 splendor till obliterated by the dawning day. 

 " Nov. 20. Aurora Borealis as last night. 

 " Nov. 22. Aurora Borealis. 

 " Nov, 23. Small Aurora Borealis. 

 " Nov. 25. Great Aurora Borealis, 15° high. 

 " Nov. 26, 7*^. Aurora in north. At 8'' aurora had overspread 

 the hemisphere, and apparently for two hours high all around 

 the horizon. Very light white in the south. 



At S'' 15™ dense black cloud from north passed slowly over 

 toward the south. Two splendid luminosities N. by W.^ 

 and N. by E. At midnight clear starlight, clouds all gone. 

 Only aurora under pole. 

 68 1 " Nov. 27, 10^''. Aurora an hour high all around the horizon, 

 69 " Nov. 28. Aurora Borealis. 



