RT Journal Article SR Electronic T1 On the relations of the Laurentian and Huronian on the north side of Lake Huron JF American Journal of Science JO Am J Sci FD American Journal of Science SP 236 OP 239 DO 10.2475/ajs.s3-44.261.236 VO s3-44 IS 261 A1 Alfred Ernest Barlow YR 1892 UL http://www.ajsonline.org/content/s3-44/261/236.abstract AB