RT Journal Article SR Electronic T1 Fisher's new hypothesis JF American Journal of Science JO Am J Sci FD American Journal of Science SP 137 OP 139 DO 10.2475/ajs.s3-46.272.137 VO s3-46 IS 272 A1 Becker, G. F. YR 1893 UL http://www.ajsonline.org/content/s3-46/272/137.abstract AB