40. _Brownhelm Township, Lorain County._—In the collection of Oberlin College are many bones of a mastodon, some jaws and teeth, and a part of the skull, collected about 1898, on the farm of a Mr. French, in the township named, not far from the shore of Lake Erie. Professor Lynds Jones, of Oberlin College, has sent the information that this mastodon was found in a county ditch in township 6 N., range 19 W., about where the ditch crosses from lot 29 to 30, on what is known as the North Ridge road. This ridge is mentioned by J. S. Newberry (Geol. Surv. Ohio, vol. II, 1874, p. 207, map opp. p. 58), and has an elevation of from 100 to 118 feet above Lake Erie. It represents the beach of old Lake Warren. According to Professor Lynds Jones, the mastodon had been buried in a morass between two branches of the North Ridge or old beach. This was of course well along toward the close of the Pleistocene period. 41. _Pittsfield Township, Lorain County._—In the collection at Oberlin College are some fragments of mastodon teeth, found somewhere in Pittsfield township (Tp. 4 N., R. 18 W.) at a depth of about 2 or 3 feet, in a ditch. No further details have been secured. In the American Museum of Natural History, at New York, is a lower right second molar which had been received from Mr. J. J. Crook. It had probably been found somewhere about Lagrange, but this is not certain. 42. _Cleveland, Cuyahoga County._—The geologist Charles Whittlesey (Smithson. Contrib. Knowl., vol. XV, art. 3, p. 15) stated that, many years before he wrote, a grinder of a mastodon had been found on the west side of Cuyahoga River, in the valley alluvium, resting on drift clay near the lake level. This might indicate one of three things: The mastodon belonged to some pre-Wisconsin stage; or the tooth had, after the retirement of the lake to its present level, been washed down from above; or the animal had lived there after the lake had reached about its present level. Newberry (Geol. Surv. Ohio, vol. I, pt. 1, 1873, p. 183) stated that his “Delta Sand Deposit,” which forms the surface of the Cleveland plateau, had yielded numerous portions of the skeletons of elephant and mastodon. These could hardly have existed before the retirement of the lake within the Warren beach. Klippart (Cin. Quart. Jour. Nat. Sci., vol. II, 1875, p. 153) says that a nearly complete skeleton of a mastodon was dug up in the immediate vicinity of Cleveland, but had been broken into pieces at once by the workmen. The identity of this specimen is doubtful and the exact locality is unknown. 43. _Medina County._—In 1875 (op. cit., p. 153), Klippart reported that nearly 50 years before he wrote tusks, said to have been 12 feet long, and some parts of the skeleton of a mastodon had been taken out of a marl pit in this county. As in other cases, there is uncertainty about the locality and the identity of the animal.