60fi 



APPENDIX. 



to E., 1° 00' to 00° 30' E.: 1° 3(Y E. to 0° 35' E., a 

 waving band, motion over zenith : little motion, 0° 20' 

 E. : patches generally diffused, 00° 00'. 



Corona at zenith, which changed into six figures, 

 each similar to the letter S, presenting the appearance 

 of so many snakes twisting with amazing swiftness, 

 00° 00' to 0° 15' W. : no motion, 0° 05' E. : patches 

 W. to E., southerly, 0° 35' E., 0° 30' E. : no motion, 

 0° 20' E., stationary. Elapsed time, 32 m . At the 

 termination, the aurora was generally diffused N. and 

 S. ; streaky, motionless, and dull. Thermometer 

 — 37i° ; calm ; sky, blue. 



February 1 0th. — At 10 h p.m. there was an ex- 

 tremely brilliant arch of a serpentine form extending 

 from W.b. S. to E.b. N., but there was no motion, 

 and the needle was unaffected beyond 10', viz. from 

 0° 40' to 0° 30' E. At ll h 10 m , however, the aurora 

 assumed an amazing variety of forms, though the most 

 imposing was a fringed and zig-zag'd undulating arch, 

 composed of numberless bright rays in the direction of 

 the dipping needle, but flitting with incredible swiftness 

 in a lateral direction from W. to E. 



From 0° 40' E. to 0° 0.5' W., motion W. to E. : 

 1° 0' E., 0° 20' E., 00° 00', no visible motion: 0° 20' E., 

 motion E. to W. : 0° 30' E. to 0° 05' W., rays ap- 

 pearing and disappearing, motion W. to E. : 0° 25' 

 W., 0° 15 E., motion E. to W. : 0° 20' E. to 0° 18' 

 W., no motion : 0° 05' W., waving arch S.W. to E. : 

 0° 45' W., 0° 55 f W. 5 0° 40', bright arch S.E., gene- 

 rally diffused: needle remained stationary 5 s : 0° 10' 

 E., 00° 00', little movement of needle, faint corona at 

 zenith : 0° 08' W., 0° 30' W., 0° 25' W., slowly to 

 0° 40' W., 0° 45' W., arch W. to E., at an angle of 

 30° northerly : 0° 45' W., almost stationary, a beam 



