618 APPENDIX. 



to the northern and southern horizons, 0° 10' E. to 

 0° 20' W., 0° 32' W., 0° 05' W., 0° 20' W., 0° 32' 

 W., 0° 20' W., 0° 40' W., 1° 00' W.: motion W. : 

 0° 55' W., 0° 10' W., 0° 40' W., 0° 20' W. : bright 

 at W. and N., 0° 15' W. : motion W. to E., 1° 00' W., 

 0° 35' W., 1° 00' W. : motion W., 0° 15' W. : motion 

 E. to W. 0° 55' W. : a flitting motion over the zenith 

 to E., 0° 20' W., 0° 50' W. : motion N., 0° 20' W., 

 0° 48' W. 5 0° 20' W., 0° 55' W. : rays W., 0° 4tf W , 

 0° 55' W. : motion W. to E., 0° 18' W., 0° 20' W., 

 0° 10' W. : motion W. to N., 0° 30' W.: no motion 

 perceptible, 0° 05' E., 0° 05' W., 0° 05 E., 0° 10' W. : 

 bright at W., 0° 02 E., 0° 32' W. : motion at W., 0° 10' 

 W., 0° 25' W., 0° 10' W., 0° 15' W., 0° 10' W. 



Time at beginning 18 h 10 m 00 s 



ending 18 26 00 



Interval 16 00 



Thermometer, observatory — ^36°, air, — 46°, calm and 

 clear; moon bright, and a dark blue sky. Aurora 

 apparently low. 



December 22d. — The day had been cold and misty, 

 and the needle was more or less agitated, having been 

 steady but twice. At 10 h p. m. the aurora was bright 

 even through the mist, and was generally diffused N., 

 S., E., and W., though bands of quickly moving rays 

 were travelling westerly at the time I was entering the 

 observatory. The needle was vibrating from 3° 30' W. 

 to 4° 40' W. : aurora became concentrated, with a 

 southerly motion, 3° 55 f W., 4° 00' W. : an irregular 

 mass in motion from S. to W., and a thick mist came 

 on, 3° 10' W. : mass seen through the mist at E., 3° 30' 

 W. : a faint band with rays from S.E. to W., at an 

 angle of 60°, passing southerly, 3° 00' W. : a band N.W. 

 to E., 2° 40' E. : motion S. to W., 2° 50' W., 2° 20' W., 



