APPENDIX. 615 



Thermometer, observatory, +22°, air, +25°; wind, 

 S.W. 6; weather clear, moon visible. 



December 3d. — The needle had been steady all day, 

 and at 7 h p.m. it it was 0° 08' E. At 10 h p.m. there 

 was 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° 00' 

 W., rays over the zenith : to 0° 20' W., motion W. to 

 E. : 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' E., 0° 00' : a bright 

 band over zenith, 0° 15' E. to 0° 12' W. : some bright 

 beams from W., 0° 20' W. : mass W. to E., 0° 00 

 to 0° 25' W. : needle steady at 0° 20' W. : bright at 

 extremes of band W. and E., 0° 55' W. : bright at W., 

 1° 20' W.: rays flitting from W. to N., 1° 30' W. : 

 bright mass from W. to N., 1° 25' W. to 0° 56' W. : 

 beams in active motion all round, and bright at W. 

 1° 15' W., serpentine arch over zenith : mass from N. 

 towards zenith at an angle of 60°, 0° 30' W. to 1° 00' 

 W. : motion W. to E., and E. to W., 0° 20' W. to 

 0° 45' W. : motion W. to E., 0° 55' W. : bright mass at 

 E., 0° 25' W. to 0° 50' W. : motion W. to E., 0° 38' 

 W., to 1° 00' W., to 0° 35' W., to 0° 55' W. : bright 

 rays N.W., 1° 20' W. : arch W. to S., 0° 55' W. to 

 1° 10' W., to 0° 45' W. : arch W. to S.E. over zenith, 

 0° 42' W. : bright mass at E., 0° 40' W., 0° 32' W., 

 to 0° 45' W. : generally diffused, steady at 2° 40' W. 

 Time at beginning 16 09 m 00 s 



en 



ding 16 21 30 



In terval 12 30 



Thermometer, observatory, — 27° 5 air, —38°. Weather, 

 calm and fine. 



RR 4 



