RT Journal Article SR Electronic T1 Jeffries Wyman; Part II JF American Journal of Science JO Am J Sci FD American Journal of Science SP 171 OP 177 DO 10.2475/ajs.s3-9.51.171 VO s3-9 IS 51 A1 Gray, A. YR 1875 UL http://www.ajsonline.org/content/s3-9/51/171.abstract AB