APPENDIX. 



599 



^^'^ - 



At 8 h p.m. it altered from 0° 5' E. to 0° 10' E., and 

 was tremulous. 



At 4 h it was steady at 0° 10' E. Thermometer in the 

 air 0°, and in the observatory + 15^°; weather fine with 

 light clouds, much the same as those already described. 

 At 6 h a beam rose from the W.N.W., and shot up 

 towards the zenith, when the needle moved from 0° 2' 

 W. to 0° 30' W. 



December 6th. — The weather had been overcast all 

 day, with snow, and a strong breeze from S. W. Ther- 

 mometer from + 13^° to +9°, when at 7 h p.m it became 

 calm, and the thermometer immediately fell to —1°. 



At midnight there was a light air from E., a clear 

 sky, and the aurora was generally diffused. The 

 thermometer had fallen to —11°, and on examination 

 the needle was vibrating from 0° 25' W. A mass of 

 aurora appeared at E., and it moved to 0° 40' E., 0° 20' 

 E., 0° 42' E., and became stationary at 35' and 40' E. 

 Some beams darted up from W., and the needle re- 

 turned to 0° 5' E. The aurora was then generally 

 diffused, and rather faint, when the marked end re- 

 mained at 0° 0'. 



Q Q 4 



