9. _Manito, Mason County._—In the U. S. National Museum is a large upper right second molar, No. 7801, presented in 1913 by Mr. John Wiedmer, of St. Louis. This was found by his workmen near Manito, in a peat deposit, at a depth of 5 feet, embedded in the top of a layer of sand which underlies the peat. At about the same depth was found a part of the skull of _Symbos cavifrons_, also presented to the U. S. National Museum. The place of discovery more exactly given is in section 22, township 23, range 6. This locality is within the area of the Illinoian drift. On the east, a few miles away, is the foot of the great Shelbyville moraine; while very near, toward the west, there are, according to Leverett (op. cit., plate VI) widely spread deposits brought down by the Illinois River from the Wisconsin ice-sheet. The geological conditions here seem to make it probable that both animals lived near the close of the Wisconsin stage. There may, however, have been a considerable interval between the times of the two animals; for peat, sometimes at least, accumulates very slowly. In proof of this may be cited the case of mastodons found near the surface of peat swamps in Michigan. In the same peat-swamp at Manito were found at depths of 3 or 4 feet some Indian flint implements. These are in the collection of the U. S. National Museum. 10. _Knox County._—On page 14 of Netta C. Anderson’s list, already mentioned, Professor Albert Hurd, curator of the museum of Knox College, Galesburg, reported that there was in the collection a well-preserved tooth of a mastodon found in the bed of Spoon River, which runs across the southeastern part of the county. Exactly where along this stream the tooth was discovered is not on record. 11. _Cambridge, Henry County._—In Netta C. Anderson’s list, on page 12, Professor Frank C. Baker, then curator of the Chicago Academy of Science, reported that there is in the collection a part of a tusk of a mastodon, found at Cambridge, in digging a well, at a depth of 16 feet. In this case one can not be certain that the tusk did not belong to one of the elephants. From information accompanying the specimen one can determine little about the exact geological age of the animal. It is probably post-Illinoian. 12. _Rural Township, Rock Island County._—Dr. J. A. Udden (in Netta C. Anderson’s list, p. 18) reported that there is in the collection of Augustana College, Rock Island, a well-preserved tooth of a mastodon, found in 1900, in a creek in the township named, in the southeastern corner of the county. Udden gives the locality as being in section 19, township 16 north, range 1 west.