ISO Magnetic Disturbance on September 25th and 26thf 184-1, 



OBSERVATORY AT TORONTO, CANADA. 



Abstract of Observations taken during a remarkable disturbance on the 



25th and 26th September, 1841. 



Additional Remarks. 



Tor. M.T. 25th. Gott. M. T. 26th. 



7" IStn P.M. 1" 12'° A.M. Sky almost entirely clear. Bright bank of aiu-oral light in 

 the N., mo\-ing across the sky as light cirri. 



7h 20'" P.M. Ih 17"" A.M. Several bright streamers and patches of light appeai'ing and 

 disappearing rapidly. 



7" 35"" P.M. Ih 32" A.M. Light brighter. Clouds rising rapidly. 



7" 38"" P.M. li> 35" A.M. Sky overcast. 



The sky continuing overcast, nothing further was seen of the aurora until 9" SO" p.m. 

 (3" 27"" A.M. Giitt.), when the clouds being bright in the N.E. several splendid streamers, and 

 bright pidsations were observed in that quarter; they remained visible until O"" 55*", becoming 

 gradually more faint. 



9" 55"" P.M. 3" 52°° A.M. Partially clouded round N. horizon, low bank of light in N. 

 and N.E. 



10" 40"" P.M. 4'- 37"' A.M. Clearing slightly in N. Light larger and brighter. 



11" 40" P.M. 5" 37°" A.M. Densely clouded ; nothing of aurora visible. 



Midnight, b*^ 57"" .\.m. Densely clouded ; nothing of aurora visible. 



