6. Galesburg, Knox County.—In Netta C. Anderson’s list referred to, page 14, Professor Albert Hurd reported there was in the cabinet of Knox College a much decayed elephant tooth, found near Galesburg in the making of a ditch. The presumption is that the ditch had not passed through the Illinoian drift and that the animal had lived after the Illinoian stage; it may be during the Sangamon stage.
14. Pekin, Tazewell County.—In 1909 (Bull. 506, U. S. Geol. Surv., p. 61), Dr. J. A. Udden reported remains of a proboscidean found in Adam Saal’s gravel-pit, between Illinois River and Dead Lake, a mile south of Pekin, at a depth of 18 feet. There were two tusks, two teeth, a part of a jaw, and a few other bones. One tooth is reported to have weighed 18 pounds, the other 8 pounds. These were doubtless weighed while wet. Only the teeth of an elephant would weigh so much. It is impossible to determine the species. Udden stated that the gravel probably belongs to the latest Wisconsin terrace. The locality is on the border of the Shelbyville moraine.
9. Peoria, Peoria County.—In 1873 (Geol. Surv. Illinois, vol. V, p. 237), A. H. Worthen reported two molar teeth, with a portion of the jaw, found in a gravel-bed in the bluff in the city of Peoria. A part of one of these teeth was then in the State Cabinet at Springfield. According to Worthen, these remains were found at a depth between 12 and 48 feet. According to Udden’s map (Bull. U. S. Geol. Surv., 506, plate I) the locality would probably be on the early Wisconsin terrace. The animal must have lived during the formation of this terrace. It would seem that this must have been after the Wisconsin ice had begun to retire and while the region was yet much depressed. Baker (Univ. Ill. Bull. XVII, p. 299) stated that this animal was a mastodon.
7. Rock Island, Rock Island County.—In Netta C. Anderson’s list of mastodons and elephants it is stated that in laying the overflow pipe from the basins of the Rock Island waterworks on the bluff south of the city, a cut was made in the loess to a depth of about 22 feet near the edge of the bluff. In the lower part of this cut were found a part of a tooth of an elephant and a piece of a leg-bone. These were given to the museum of Augustana College. The loess at this point is said to be about 35 feet thick and the lower part is somewhat peaty in cuts in the streets further west. Probably this loess belongs to the Iowan stage and that beneath it was an old soil deposited in peat-swamps. The fossil seems to belong to the Iowan glacial stage, possibly to the Peorian interglacial.
Elephants Found Within the Area of the Wisconsin Drift.
8. Atwood, Piatt County.—In Netta C. Anderson’s list, page 17, it is stated that in the museum of Northwestern University there is a tooth of a mammoth found near Atwood in 1879. It was dug up from about 6 feet from the surface. Atwood is in the extreme southeastern corner of Piatt County; the region round about is occupied by what Leverett (Monogr. XXXVIII, plate VI) calls the Shelbyville till sheet, belonging to the early Wisconsin stage. The animal may have lived at any time since that till was deposited up to Late Wisconsin. The tooth was probably buried in some old peat-swamp and unearthed during tilling operations.
13. Wheaton, Du Page County.—In Netta C. Anderson’s list, page 10, it was reported on the authority of Charles A. Blanchard, president of Wheaton College, that about 1890 the remains of a mammoth were found in ditches on the Jewell farm, near Wheaton. The remains consisted of about a dozen ribs, as many vertebræ, a femur, and other parts of legs. It appears to the writer that the remains may have belonged to a mastodon.
Wheaton is situated on that part of the Valparaiso moraine which runs parallel with the western shore of Lake Michigan. Whatever the animal was it must be regarded as belonging to the Late Wisconsin stage.
13. Oak Park, Cook County.—Under this number 13 must be recorded a mammoth tooth found in a gravel-pit at Oak Park, at a depth of several feet. Only parts of it were secured and the species is unknown. The pit was in the Glenville beach, laid down during the waning of the Wisconsin glacial sheet (Baker, F. C., Univ. Ill. Bull. XVII, p. 70).
10. Evanston, Cook County.—In Netta C. Anderson’s list, page 9, Professor U. S. Grant, of Northwestern University, reported that the museum contains the tooth of a mammoth, taken from a gravel-pit near Evanston. The animal must have lived after the Wisconsin glacier had withdrawn into the basin of Lake Michigan.