566 



APPENDIX. 



[No. III. 



through a very dense atmosphere. A beam, at 324°, elevated 15°. An arch 

 from 234° to 121° and some short beams at 76 



23d. At nine, two parallel arches from 313° to 76°, supported on buttreses 

 at both extremities. The appearance resembled a bridge of light. At 

 1 1 h. 30'. The northern and eastern parts of the sky were entirely free from 

 Aurora. Some irregularly curved streams extended from 99° to 234°, and 

 dark clouds intervened between them. At midnight three arches from 110° to 

 234°, the upper one most brilliant. No perceptible interior motion of the 

 Aurora. The needle moved 10° westward after nine. 



24th. At 9h. p. m. Aurora appeared through the clouds and snow, tra- 

 versing the zenith in the direction of 65° and 245°. The needle moved 

 eastward 1° 5'. At midnight, abeam from 99°, of slender breadth when near 

 the horizon, dilated considerably in its ascent, and at its termination in the 

 zenith spread so as nearly to cover the upper part of the heavens. Another 

 beam arose from the same point, curved several degrees to the westward, and 

 then proceeded to the zenith. These beams quickly disappeared, but a low 

 arch extending from 279° to 65° remained stationary. The needle moved 

 westward between nine and midnight 1 ° 22'. 



25th. At 9h. p. m. faint beams at 324° and 144°. At midnight, a hori- 

 zontal stream from 133°; to 223° some beams at 324°, and patches in several 

 other parts : all very faint. 



26th. At 9h. p. m. a faint Aurora at 99°. At midnight, a mass of dense 

 light burst forth bearing 65°, at an elevation of 20°, which presently curved 

 round, and assumed the shape of a horse-shoe ; at that instant a beam flashed 

 from 324° to the nearest part of the curve, and immediately an arch proceeded 

 upwards, and passed about 3° eastward of the zenith. The needle moved 

 eastward 12'. 



28th. At 8h. p. m., when day-light was perceptible to the westward, 

 a stream of Aurora issued from a dark mass of cloud bearing 110°, and 

 proceeded upwards in the direction of 346° ; but when it reached the zenith, 

 the upper part inclined to the westward, and an arch was formed from 110' 

 to 290°, reaching from one horizon to the other. Some smaller streams 

 appeared about 1 89°, lying parallel to a range of clouds which resembled it 

 in colour, both being a steel- grey. The extremities of these streams pointed 

 121° and 257°. At 9h. p.m. clear weather. Three arches appeared, one from 



