RT Journal Article SR Electronic T1 On some rocks and other dredgings from the Gulf Stream JF American Journal of Science JO Am J Sci FD American Journal of Science SP 168 OP 171 DO 10.2475/ajs.s3-1.3.168 VO s3-1 IS 3 A1 S. P. Sharples YR 1871 UL http://www.ajsonline.org/content/s3-1/3/168.abstract AB