. Narrative of a journey to the shores of the Polar Sea, in the years 1819, 20, 21, and 22 [microform]. Scientific expeditions; Expéditions scientifiques. ' »»MigmiitSi)fm»-' £iW:jMjS«a^'«;' No. III.] Dr. RICHARDSON ON THE AURORA. 605 arch to its former dimensions was equally gradual with its dilatation. The arch was occasionally divided into five parallel beams, which, having a direction nearly from north to ath, traversed it obliquely. These beams had a quick lateral motion, and were sometimes gathered into masses that receded so far from each other, as to break the arch into several por
. Narrative of a journey to the shores of the Polar Sea, in the years 1819, 20, 21, and 22 [microform]. Scientific expeditions; Expéditions scientifiques. ' »»MigmiitSi)fm»-' £iW:jMjS«a^'«;' No. III.] Dr. RICHARDSON ON THE AURORA. 605 arch to its former dimensions was equally gradual with its dilatation. The arch was occasionally divided into five parallel beams, which, having a direction nearly from north to ath, traversed it obliquely. These beams had a quick lateral motion, and were sometimes gathered into masses that receded so far from each other, as to break the arch into several portions, which had pointed extremities arising from the obliquity of the beams which composed them. The length of the beams was sometimes considerably increased by their northern extremities shooting up, whilst their lower ends remained stationary. These appearances were but of momentary duration, the beams rapidly re-uniting to form a homogeneous arch. After the Aurora had continued for about half an hour to display a succes- sion of the above forms, the arch totally disappeared, and a horizontal mass of light was observed in the southern quarter of the sky, having its face longitudinally barred by several thin strata of clouds. At lOih., there were various irregular masses of light scattered over the sky, but most luminous in the north. The Aurora had appeared early in the night in the west, afterwards its most luminous parts were collected in the south. about nine, it shone most brightly in the eastern quarter of the sky, and now, as we have just mentioned, its principal seat was in the lation ^ated ibout litions I more was bf the Hour. Tctnp. Wind, 9 -33 Fresh, hazy Noon -25 do. do. do. 9 -31 Moderate. Midnt. -31 do. do. December llth, 1820. small snow, do. Very little mist at the rapid, clear. Bright moonlight, do. Rapid very loud. At 5h. p. m., several broad arches of rare light appeared, extending from to At six, they disappea
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Keywords: ., bookcentury1800, booksubjectscientificexpeditions, bookyear1823
