RT Journal Article SR Electronic T1 Astronomical observations with spectroscope JF American Journal of Science JO Am J Sci FD American Journal of Science SP 71 OP 77 DO 10.2475/ajs.s2-35.103.71 VO s2-35 IS 103 A1 Rutherfurd, Lewis M. YR 1863 UL http://www.ajsonline.org/content/s2-35/103/71.abstract AB