No. in.] 



APPEARANCES OF THE AURORA. 



567 



94° to 290°, elevated 80°, the other from 290°, passing about 2° east of the 

 zenith, and the third went parallel to this, and united in the same points in the 

 horizon, but they were separated in the zenith by a stream of cloud. In two 

 minutes afterwards, the first arch disappeared, and the two others closing in 

 the zenith, formed one broad stream, and passed off to the westward. Stars 

 were faintly seen. At midnight, a very dense atmosphere obscured the sky ; 

 neither stars nor Aurora visible. The needle, however, moved 35' westward 

 between nine and midnight. 



29th. A faint gleam of Aurora fringed the upper part of some dark 

 clouds between 133° and 155°. 



30th. At 9h. a broad arch across the zenith from 88° to 290°, and the 

 interior motion was rapid. At midnight, an arch from 110° to 257°, elevated 

 20° ; it separated in the zenith, and then the light passed instantaneously down 

 to each horizon. Needle moved westward. 



April 1st, the changes in the position of the needle this morning deserve 

 some notice. At 8h. a. m. it was nearly in the same position as at midnight; 

 an hour afterwards it had moved 12' eastward, and by eleven, 10' more. At 

 8h. a. m. there was a mackerel sky to the north, the strata of the clouds being 

 vertical. Near the west horizon there was a layer of dense clouds which soon 

 spread over the whole sky. At llh. these dark clouds gave place to a thin 

 fleecy sky, and many blue portions were seen. The needle then returned 

 towards the westward, and by four had reached within two minutes of the 

 point at which it stood at 9h. a. m. At 9h. 30' p. m. the Aurora appeared 

 through a hazy atmosphere, in an arch from 99° to 234°. 



5th. An arch passed from 88° to 178°, at a low elevation. At midnight, 

 an arch composed of several streams apparently blended together, issued from 

 110° and passed about 10° west of the zenith to the horizon at 279°. This 

 arch separated in the zenith, and then each part passed over to the horizon at 

 279°. A very slender faint arch remained from 9° to 189°. The needle 

 moved a little westward. 



6th. At nine, masses of light of irregular breadth fringed the upper 

 part of a range of clouds extending from 99° to 212°. At midnight, a waving 

 low stream from 99° to 212°, of dense light, the motion rapid, going towards 

 the latter bearing. Motion of the needle westward. 



7th. At 9h. p. m., an arch stretching from 279° to 110°; motion of the 



