602 APPENDIX. 



horizon at an angle of 25° : 3° 00' E. to 1° 35' E., to 

 0° 50' E., to 1° 35' E., to 1° 10' E., to 2° 30' E., a 

 large mass from west to south: 2° 00' E., 2° 10' E., 

 1° 55' E., concentrated mass due south, in magnetical 

 meridian: needle nearly steady at 1° 40' E., 2° 00', steady 

 five seconds : 1° 50' E. to 2° 05' E., a beam from N. E. 

 to N., 0° 30' E. : needle moved slowly to 1° 05' E., 

 0° 0.5' K, a beam N.E. : to 1° 10' E., to 0° 30' W., to 

 0° 40' E., to 0° 22' W., to 1° 40' E., and stopt sud- 

 denly at 0° 5' E., to 1° 50' E., beam from east to west : 

 2° 0' K, to 00° 00', to 0° 05' E., to 0° 22' W., corona 

 at zenith: 1° 20' W., to 0° 40' W., to 0° 05' W., 

 to 1° 35' W., to 1° 10' W., to 2° 40' W., small con- 

 centrated mass over the observatory: 1° 50' W., to 

 2° 50' W., to 2° 0' W., narrow arch from N. E. to 

 zenith : 2° 50' W., slowly to 1° 50' W., much slower to 

 2° 50' W., 1° 30' W., to 2° 00' W., a bright beam 

 expanded into a narrow horizontal mass, 10° high, 

 from east to west: 1° 40' W. to 2° 05' W., beams 

 from S.E. to N.NE. : 1° 25' W. to 1° 45' W., some 

 round patches from E. to N.W. : needle steady a few 

 seconds, then moved to 1° 20' W., to 1° 45' W., 

 1° 36' W., steady again, then to 2° 12' W., to 1° 50' W., 

 to 2° 05' W., slowly to 1° 54', to 1° 10' W., to 2° 05' 

 W,, to 1° 30' W., to 1° 40' W., where it remained 

 steady fifteen seconds, and changed to 1° 38' W., to 

 1° 40' W., to 1° 35' W., to 1° 45' W., stationary at 

 1° 20' W., and finally settled very slowly at 1° 00' W. 

 The time was then 17' 1 54 m 15 s , making an elapsed time 

 of 24 m 15 s . 



On returning to the house, I remarked the total dis- 

 appearance of the aurora, with the exception of a filmy 

 light at E. b. N., and W. With it had vanished the 

 dense covering of the sky, which was now of a dark 



