Narrative of the Arctic land expedition to the mouth of the Great Fish River : and along the shores of the Arctic Ocean, in the years, 1833, 1834, and 1835 . t they would sometimes con-centrate into one brilliant radiating mass, and in aninstant shoot out into multiform and eccentric shapestowards the zenith, while vivid rays of a perceptibleR R 3 on APPENDIX. deep red and yellow colour danced in spiral lines to theopposite horizon. On going to the observatory, theneedle was in active motion ; I found it at 0° 30 W.,the principal mass of aurora being also in that quarter;the motion of some ray
Narrative of the Arctic land expedition to the mouth of the Great Fish River : and along the shores of the Arctic Ocean, in the years, 1833, 1834, and 1835 . t they would sometimes con-centrate into one brilliant radiating mass, and in aninstant shoot out into multiform and eccentric shapestowards the zenith, while vivid rays of a perceptibleR R 3 on APPENDIX. deep red and yellow colour danced in spiral lines to theopposite horizon. On going to the observatory, theneedle was in active motion ; I found it at 0° 30 W.,the principal mass of aurora being also in that quarter;the motion of some rays at the time being from W. toE. It successively changed from 0° 30 W., to 0° 50W., to 0° 15 W.: a bright irregular arch from W. tozenith, 0° 50 W: many rays and flashes at E., 1° 0W. to 0° 30 W., to 1° K/ W.: a bright mass at W., butwithout motion, 1° 40 W. to 1° 45 W.: mass in motionfrom W. to zenith, 1° 0 W., to 1° 30 W.: a faint ir-regularly fringed arch, extending from E. across thezenith to , 0° 40 W. to 1° 25 W., to 0° 52 W.:a faint mass without motion from W. to , 0° 45W., 1° 05 W.: concentric arches from W. to zenith,. 0° 35 W., 0° 50 W., to 0° 30 W.: a faint irregularmass from W. to S. W., 0° 30 W., to 0° 55 W.,0° 40 W., 0° 55 W., to 0° 40 W., 0° 55 W., andrested at 0° 40 W. Time at beginning 18h 07m 00s ? ? ending 18 14 30 Interval *f 30 APPENDIX. 615 Thermometer, observatory, +22°, air, +25°; wind, 6; weather clear, moon visible. December 3d. — The needle had been steady all day,and at 7h it it was 0° 08 E. At 10h therewas a bright display of the aurora in the form of un-dulating bands, composed principally of connected rays,and many beams as well as flashes were plentifully dis-persed. The needle moved from 20 W., to 1° 00W., rays over the zenith : to 0° 20 W., motion W. toE.: 0° 15 E., to 0° 05 E., to 0° 30 E., to 0° 00,mass W. to E.: an arch over zenith, 0° 22 E.: a ser-pentine arch over zenith, 0° 28
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Keywords: ., bookcentury1800, booksubjectscientificexpeditions, bookyear1836
