RT Journal Article SR Electronic T1 A theory of the constitution of the Sun, founded upon spectroscopic observations, original and other JF American Journal of Science JO Am J Sci FD American Journal of Science SP 33 OP 44 DO 10.2475/ajs.s3-21.121.33 VO s3-21 IS 121 A1 Hastings, Charles S. YR 1881 UL http://www.ajsonline.org/content/s3-21/121/33.abstract AB