125 

 126 

 127 

 128 

 129 

 130 

 131 

 132 



133 

 134 

 135 

 136 

 137 

 138 

 139 

 140 



141 

 142 



143 

 144 

 145 



Stiles's Auroral Observations. 161 



fluence of columns from all the N.W. and N. to the zenith 

 oonc-umno- in the two stars in heads of (Gemini. At 7'' 44'" 

 all these over, hut new ones rising and ))laying. At 7'' 59™ 

 another arc in north, i)assed under the pole. At 8'' 1|'" pyr- 

 amids playing from the ui)])er limb. At 8'' 11"' coruscations 

 concur between Gemini and the two stars in the liead of 

 Leo, or in midst of Cancer, and on the meritlian 12° south of 

 the zenith ; but evanishing and faint. 



At 8'' 15'" a new arc rose from S.W. horizon, touched Orion, 

 Rigel, Sirius, or a little below, and passed romid to eastern 

 horizon. At 8'' 20'" the south arc, or remnant of it, crossed 

 through Lepus, 5° south of Rigel, and 2° or 3° south of Si- 

 rius. A branch issuing from it ascended through Sirius, 

 At 8^^ 30"" south faint "arc remaining and sinking further 

 south, or below Sirius and Le])us. All the south in aurora 

 dim or dull and faint, down to south horizon, and perhaps 

 40° each side the meridian, the upper side a curved limb per- 

 haps half way u]> from the horizon to Sirius. At 9'' heavens 

 full of aurora. I left ol)serving. 



1783, Apr. 2. Small Aurora Borealis. 

 At 8'' 50'" A.B., arc 5° wide up Avithin 5° of pole star. 

 Small Aurora Borealis. 



Small Aurora Borealis. Arc 3° high along under jDole. 

 Small Aurora Borealis, 

 Aurora Boi-ealis. 

 Aurora Borealis. 

 At 9'' 5™ saAv an auroral beam arising from W. 19° N. 



perhaps 15° above the horizon, ascending about Berenice's 

 hair, thence between Arcturus and Cor Caroli, and ranged 

 near or through the northern crown, through the stars in 

 Hercules' hip. At 9'' 30'" crossed the meridian and passed 

 south of Lyra, when there ascended another stream from E. 

 horizon and joined that from the Avest about the vertex. It 

 described a crooked path, the upper part bending southward. 

 At 9'' 40™ evanished. 



1784, NoA'. 15. Aurora Borealis, 



1785, May 9, Aurora Borealis. 



" June 5. Aurora Borealis and Australis. 



" July 3. Aurora Borealis. 



" Aug, 9. Aurora Borealis, small. 



" Sept. 8. Aurora Borealis, large. 



" No\^ 29, Aurora Borealis, small. 



1786, Feb. 28. At 10'' A,B, ; from a dark cloud 15° high issued cor- 



uscations to the pole star, 



" Mar. 13, Great Aurora Borealis, 



" Mar, 19. Great A.B. Auroral arch from E. to W., half w^ay 

 np to the pole star ; stri» or streams up to pole, 



" Mar, 20, Aurora Borealis, 



" Mar, 21. Aurora Borealis, 



" Mar, 22, Great A.B. By 9'' the coruscations spread over the 

 northern half of the hemisphere, and arches E. and AY. crossed 

 20° south of the meridian. At 9'' 5"" a beam from the E, as- 

 cended and passed over Spica Virginis then nearly on the me- 

 ridian ; at the same time another from the Avest touched Sirius 

 Avith its south limb, and in five or six minutes it evanished. 

 21 



