614 



APPENDIX. 



deep red and yellow colour danced in spiral lines to the 

 opposite horizon. On going to the observatory, the 

 needle 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. to 

 E. It successively changed from 0° 30' W., to 0° 50' 

 W., to 0° 1 5' W. : a bright irregular arch from W. to 

 zenith, 0° 50' W: many rays and flashes at E., 1° 0' 

 W. to 0° 30' W., to 1° 10' W. : a bright mass at W., but 

 without motion, 1° 40' W. to 1° 45' W. : mass in motion 

 from W. to zenith, 1° 0' W., to 1° 30' W. : a faint ir- 

 regularly fringed arch, extending from E. across the 

 zenith to S.W., 0° 40' W. to 1° 25' W., to 0° 52' W. : 

 a faint mass without motion from W. to S.W., 0° 45' 

 W., 1° 05' W. : concentric arches from W. to zenith, 



0° 35' W., 0° 50' W., to 0° 30' W. : a faint irregular 

 mass 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., and 

 rested at 0° 40' W. 



Time at beginning 18 h 07 m 00 s 



■ ending 18 14 30 



Interval 7 30 



