3/38 The coruscations of the Aurora Borealis were very brilliant almost every evening of the first week and were generally of the most variable kind. On the 3rd they were particularly changeable. The first appearance exhibited three illuminated beams issuing from the horizon in the north, east, and west points, and directed towards the zenith; in a few seconds these disappeared and a complete circle was displayed, bounding the horizon at an elevation of fifteen degrees. There was a quick lateral motion in the attenuated beams of which this zone was composed. Its colour was a pale yellow with an occasional tinge of red. |