618 



APPENDIX. 



[No III. 



December 25th, 1820. 



Hour. Temp. Wind. 



A.M. 9 -43 W. Moderate. Clear. Faint bur round the moon, con- 

 siderable mist over the rapid. 

 Noon. -38 do. do. Cloudless. Haze in the horizon. 



3 -35 S.W. Fresh, do. do. Stratus in the south, rapid 



inaudible, and free from mist. 

 9 -31 W.S.W. do. do. A little haze. 

 Midnt. —28 Cloudy and dark in the horizon. Stars 



seen obscurely in the zenith. 

 At 1 (a. m. 26th.), the Aurora appeared for the first time this night in form 

 of a faint arch, extending from the altitude of 40° in the N.W. to a spot 

 near the zenith, bearing S.E. It was composed of longitudinal bands or 

 streams of light, connected with each other by a faint luminousness. A 

 little snow was falling at this time in minute crystals, and there was a slight 

 haziness in the sky. 



December 26th, 1820. 



Hour. Temp. Wind. 



9 -24 W.b.S. Fresh. Cloudy. Much snow-drift, very cold. 

 Noon —22 S.W. Moderate. do. Stratus, sun obscured, much 



mist from the rapid. 



9 -29 W. do. Clear. 



Midnt. -32 do. Light. do. 



At lOh. 30' an arch-formed Aurora, about 8° broad, appeared a little to the 

 southward of the zenith. Its extremities descended to within 15° degrees of 

 the horizon, and terminated in the S.E. and N.W. At one time, the light 

 of the arch appeared of uniform density throughout; at other times it was 

 most intense along its southern or lower edge, and became gradually fainter 

 upwards until it disappeared. 



The stars were seen obscurely through the denser light ; in other parts of 

 the sky they stone brightly. At the same time, there appeared in the E. S.E. 

 parallel to the horizon, a mass of bright light with two or three dark horizontal 

 streaks across its face, produced apparently by intervening layers of cloud. 

 The arch continued for a considerable time without undergoing any material 

 alteration in its appearance* except that it occasionally brightened up and 

 faded away again. Once, indeegl, for a few moments, it separated into por- 



