52. _Stafford, Genesee County._—James Hall, in 1843 (Geol. 4th Dist., p. 364), reported that some years previously a small molar tooth had been found at this place. It was beneath muck and upon a deposit of clay and sand. There was found also a quantity of hair-like confervæ, of a dun-brown color, which resembled hair so closely that a close examination was necessary to determine its real nature.
53. _Batavia, Genesee County._—In 1904 (Bull. 69, New York State Museum, p. 932), Clarke reported for H. L. Ward, that in 1897 two tusks, a part of a skull with teeth, several vertebræ, and ribs had been found here. Nothing more is known about this case.
54. _Holley, Orleans County._—In 1843, James Hall (Geol. 4th Dist., p. 364) reported that during the excavation of the Erie Canal, a large molar tooth was found in a swamp near Holley. This, according to Clarke, was about 1820. At the earliest time assignable, this mastodon lived after the Wisconsin glacier had withdrawn nearly into the basin of Lake Ontario. It may have had its existence nearly up to the Recent epoch.
55. _Medina, Orleans County._—In the Buffalo Society of Natural History is a part of the left ramus of the lower jaw of a mastodon, labeled as having been found in a swamp near Medina. It contains the second and third true molars. The remark about the geological age of the Holley mastodon is applicable to this one.
56. _Niagara, Niagara County._—In 1842 (Zool. N. Y., Mamm., p. 104), De Kay stated that a mastodon tooth had been found in digging a mill-race on Goat Island, 12 or 13 feet below the surface. Lyell, in 1843 (Ann. Mag. Nat. Hist., vol. XII, p. 127), alluded to the occurrence of remains of mastodon in a fresh-water formation on the right bank of the Niagara River at the Falls. The formation appears to have consisted of gravel. These are possibly the same remains as those mentioned by De Kay. Hall (Geol. 4th Dist., p. 364) stated that the deposit was a fine gravel and loam containing fresh-water shells, and evidently of fluviatile origin. These deposits were noted by W. E. Logan (Geol. Canada, 1863, pp. 913–914). On the Canadian side of the gorge below the Falls, 16 species of fresh-water mollusks were found in the sand, evidently where they had lived.