RT Journal Article SR Electronic T1 The aurora of Feb. 4, 1872 JF American Journal of Science JO Am J Sci FD American Journal of Science SP 273 OP 281 DO 10.2475/ajs.s3-3.16.273 VO s3-3 IS 16 A1 A. C. Twining YR 1872 UL http://www.ajsonline.org/content/s3-3/16/273.abstract AB