RT Journal Article SR Electronic T1 On the origin of jointed structure JF American Journal of Science JO Am J Sci FD American Journal of Science SP 47 OP 49 DO 10.2475/ajs.s3-27.157.47 VO s3-27 IS 157 A1 Gilbert, Grove Karl YR 1884 UL http://www.ajsonline.org/content/s3-27/157/47.abstract AB