In the American Museum of Natural History, New York, there is a lower jaw of a mastodon with second and third true molars, right and left, which is said to have come from Cohoes. 32. _Copenhagen, Lewis County._—In 1884 (Trans. Linn. Soc. N. Y., p. 47), Dr. C. Hart Merriam stated that there had been found in 1877, in a marl bed about a mile west of Copenhagen, a tusk measuring 5 feet 9 inches in length. It was purchased for the State Cabinet. It could not be determined whether this had belonged to an elephant or a mastodon. 33. _Center Lisle, Broome County._—In the Watkins Glen-Catatonk folio No. 169 of the U. S. Geological Survey, on page 28, Dr. Ralph S. Tarr stated that remains of a mastodon had been found a few hundred yards north of this town, in a boggy place where a spring emerges from the base of a gravel terrace. He did not tell what parts had been found. He remarked that one could not be certain whether the bones had been washed out of the gravel or had come from an animal which had mired there. In geological age it must be referred to the last half of the Wisconsin stage. 34. _Brookton, Tompkins County._—In the American Naturalist, volume V, 1871, page 314, C. Fred Hartt gave an account of the discovery of mastodon bones at Mott’s Corners, on Six-mile Creek. This is the former name of the present village of Brookton. Only 2 teeth and some fragments of bones were secured. The locality is situated in a deep valley of the creek, which had once been filled with drift, and through this the creek had cut down to solid rock. Where the bones were found was a small peat-bog consisting of a layer of peat varying from a few inches to 2 feet. This was full of sticks, pine knots, bark, etc., more or less decayed. Below this peat was a layer, a few inches thick, composed of clay mixed with pebbles and pieces of shale. In this were the teeth and decayed bones. The whole was underlain by drift materials. Tarr, as cited above, stated that mastodon remains had been found in a swamp in the valley bottom at Brookton. He did not say when the discovery was made, nor what was found. It is not unlikely that the two cases are the same. In 1871 (Amer. Jour. Sci., vol. II, p. 58), Dr. Burt G. Wilder reported that 5 teeth and many fragmentary bones had been found near Ithaca, in a deposit of modified drift. The writer has been informed by Miss Pearl Sheldon, of Cornell University, that these are the same remains as those reported by Professor Hartt. The mastodon found at Brookton could hardly have lived there before the stage when the waters that gathered at the southern edge of the retreating ice were reaching the sea by way of Mohawk and Hudson Rivers.