No. III.] 



AURORA BOREALIS. 



669 



curtain. It extended from 99° to 200°. At midnight, a waving arch of low 

 elevation from 76° to 212°. Needle had moved 45' westward since nine. 



21st. At 7h. p. m., some streams of cloud which resembled the Aurora in 

 shape and colour crossed the zenith ; but when the daylight disappeared, no 

 Aurora was visible. 



23d. At lOh. 30m. p. m., Aurora first appeared in an arch from 279° to 189° ; 

 elevation 12°. Needle moved westward 1° 11'. 



27th. At midnight, Aurora appeared through the haze in two low arches, 

 from 99° to 189°. 



29th. Aurora beamed through the haze in low streams of faint yellow 

 colour. 



30th. At llh. 40m., some patches of Aurora at 144°, elevated 20°. No 

 motion perceptible in the needle. 



May 1st. The coruscations were very agitated and brilliant between llh. 

 and midnight, but they did not produce any change in the needle. 



3d. Midnight, Aurora proceeded from a mass of dense cloud, bearing 99°, 

 passed near the zenith to 257°. The attenuated beams of which this arch 

 was composed, had a quick lateral motion. Little change in the needle. 

 Daylight in the eastern part of the sky, 



5th. A faint stream proceeded from 144° to an elevation of 45°. Needle 

 moved westward. 



I did not observe any Aurora after this day, but Mr. Hood saw it on the 

 6th, 10th, 11th, 12th, and 13th, after which date there was constant daylight, 

 which prevented us from seeing it. 



4 D 



