562 



APPENDIX. 



[No. Ill 



through this stream with undiminished brilliancy— the needle moved a few 

 minutes westward. 



February 27th, at 9h. p. m. two arches crossed the zenith from 76° to 279°, 

 very broad and brilliant ; the stars were distinctly visible through them. At 

 midnight, the Aurora was diffused over a great portion of the sky, Three 

 arches appeared parallel to each other in the zenith, whose extremities pointed 

 to 54° and 234°, and a horizontal stream about 30° high, reaching from 302° to 

 31°, along which the interior motion was extremely rapid. Soon after- 

 wards, some dense clouds overspread the sky, but the Aurora gleamed through. 

 The needle moved near two degrees eastward after nine. It kept an easterly 

 position until after 2h. p. m. on the next day, and then it receded 40' in the course 

 of an hour. The clouds were of the fleecy kind, which sailors denominate a 

 mackarel sky. At midnight an irregular band extended from 88° to 200, at an 

 elevation of 15°. A beam at 324° pointing towards the zenith. 



March 1st, at 9h. p.m., an arch stretched from 99° to 155°. At llfh., 

 when the snow was falling heavily, and a dense atmosphere obscured the 

 stars, the Aurora appeared in an arch across the zenith, having its extremities 

 88° and 200°, but did not extend to either horizon. This stream disappeared 

 before midnight. The atmosphere was then more dense, and the snow de- 

 scended in larger flakes. Between midnight and the following morning, the 

 needle was drawn 45' to the eastward, and it did not recover its usual position 

 before 9h. p. m. on March 2d. 



2d. At 8h. 30' p. m., Aurora appeared in a broad arch from 279° to 99°, and 

 continued without any alteration until nine, when the needle had moved 32 

 minutes westward. The breadth of the arch then increased considerably, and 

 a dark cloud passing along its middle gave an appearance of two arches. At 

 midnight, the coruscations occupied many parts of the sky. Two faint arches 

 crossed the zenith from 99° to 279°. A more brilliant arch extended from 76° 

 to 290°, at an elevation of 60° degrees. Several patches between 54° and 

 346°, and a broad band from 279° to 223°. The needle did not evince any 

 material change. 



3d. At midnight, a slender beam at 76°, and a patch at 279°. Needle 

 had moved 10 minutes westward since nine. 



4th. At midnight, an arch across the zenith 54° and 234°, in which the 

 interior motion ran swiftly from the former to the latter bearing. A low band 



