The renewed interest in the matter seems to have prompted Southey to the writing of his poem _Madoc_, though he refrained from publishing it for some years. If one may judge from his introductory note, Southey held to the historical basis of the narrative. Meanwhile, reports were published of this and the other tribes being found speaking Welsh.[705] In 1816, Henry Kerr printed at Elizabethtown, New Jersey, his _Travels through the Western interior of the United States, 1808-16, with some account of a tribe whose customs are similar to those of the ancient Welsh_. In 1824, Yates and Moulton (_State of New York_) went over the ground rather fully, but without conviction. Hugh Murray (_Travels in North America_, London, 1829) believes the Welsh went to Spain. In 1834, the different sides of the case were discussed by Farcy and Warden in Dupaix’s _Antiquités Méxicaines_. Some years later the publication of George Catlin[706] probably gave more conviction than had been before felt,[707] arising from his statements of positive linguistic correspondences in the language of the so-called White[708] Mandans[709] on the Missouri River, the similarity of their boats to the old Welsh coracles, and other parallelisms of custom. He believed that Madoc landed at Florida, or perhaps passed up the Mississippi River. His conclusions were a reinforcement of those reached by Williams.[710] The opinion reached by Major in his edition of _Columbus’ Letters_ (London, 1847) that the Welsh discovery was quite possible, while it was by no means probable, is with little doubt the view most generally accepted to-day; while the most that can be made out of the claim is presented with the latest survey in B. F. Bowen’s _America discovered by the Welsh in 1170_ A.D. (Philad., 1876). He gathers up, as helping his proposition, such widely scattered evidences as the Lake Superior copper mines and the Newport tower, both of which he appropriates; and while following the discoverers from New England south and west, he does not hesitate to point out the resemblance of the Ohio Valley mounds[711] to those depicted in Pennant’s _Tour of Wales_; and he even is at no loss for proofs among the relics of the Aztecs.[712] =H.= THE ZENI AND THEIR MAP.—Something has been said elsewhere (Vol. III. p. 100) of the influence of the Zeni narrative and its map, in confusing Frobisher in his voyages. The map was reproduced in the Ptolemy of 1561, with an account of the adventures of the brothers, but it was so far altered as to dissever Greenland from Norway, of which the Zeni map had made it but an extension.[713]