APPENDIX. 601 



to0° 58' W., to 1° 28' W., to 1° 08' W., to 1° 28' W., 

 to 1° 08' W., to 1° 28' W., to 1° 08' W., to 1° 15' W., 

 to 0° 58' W., to 1° 08' W., to 0° 58' W., to 1° 00', 

 where it remained stationary at 16 h 52 m 00 s , making an 

 interval of fifteen minutes. I remained there a quarter 

 of an hour longer, and it vibrated with diminished force 

 between 1° 00' W., and 0° 30' W. 



January 7th, 1834. — For nearly a month the needle 

 had not been perceived to be affected by the aurora? 

 which it may be proper to observe was always very 

 faint, apparently high, and generally confined to one 

 point of the heavens. 



Its motion was rarely detected, though, from some 

 discrepancies in the diurnal course of the needle, such 

 an occurrence may be inferred. At 10 h p.m. this night, 

 the sky was nearly entirely obscured, except at the 

 northern and western horizons above the hills. At the 

 former were some bright rays, and at the latter a 

 brilliant streaming mass of a reddish coloured aurora, 

 which, as I went to the observatory, flitted across the 

 zenith to the eastward. 



The needle was moving quickly, and having marked 

 it at 5° 30' E., I ran for Mr. King to watch the motion 

 of the aurora; and noting the time by chronometer 

 ( 1 7 h 30 m 00 s ), I saw the needle move from 5° 30' E. 

 to 2° 00' E., to 0° 40' E., to 1° 20' E., to 0° 10' W., to 

 0° 10' E., to 1° 40' E., a large mass darted up from 

 S.W., and faded into the tone or colour of the sky at 

 the zenith : 2° 35' E. to 1° 10" E., a beam from east to 

 west, passing northerly at an angle of 80° : 1° 50' to 

 1° 40' E., a high horizontal narrow mass at an angle of 

 1 5° E. : 1° 55' E., 2°.! 5' E., 1° 25' E., 2° 20' E., 1° 00' E., 

 2° 25' E., 1° 35' E., a beam shot up from north, and, 

 dividing itself into three branches, extended to the S.W. 



