The ice age in North America and its bearing upon the antiquity of man5th edwith many new maps and illus., enland rewritten to incorporate the facts that bring it up to date, with chapters on Lake Agassiz and the Probable cause of glaciation . the time occupied by the Missouri River in lowenng its bot-tom, two miles more or less in width, somewhere from fifteento twenty-five feet, a very respectable antiquity, but muchshort of the close of the glacial invasion.* But after threevisits to the locality, Professor Winchell seems to show con-clusively that the loess belongs to the original undistur
The ice age in North America and its bearing upon the antiquity of man5th edwith many new maps and illus., enland rewritten to incorporate the facts that bring it up to date, with chapters on Lake Agassiz and the Probable cause of glaciation . the time occupied by the Missouri River in lowenng its bot-tom, two miles more or less in width, somewhere from fifteento twenty-five feet, a very respectable antiquity, but muchshort of the close of the glacial invasion.* But after threevisits to the locality, Professor Winchell seems to show con-clusively that the loess belongs to the original undisturbed Journal of Geology, October-Novembor, 1902. 680 THE ICE AGE IN NORTH AMERICA. deposit of lowan age. My own personal investigations onthe ground amply sustain this view as will appear from study ofthe accompanying illustrations. The remnant of loess is protected on a rocky promontoryleft between the main valley of the Missouri and a smallstream whose channel dates from preglacial times. Thestratum near the bottom of the tunnel in which the skeletonwas found is between eleven and twelve feet above the extremepresent highwater mark of the river, while the loess overlyingthe skeleton is twenty feet thick; and loess underlies the house. Fio. 188—View showing entrance to tunnel in which the Lansing Skeleton wag found(Courtesy of Records of the Past.) still several feet higher, and mantles the narrow slope wellup to the 200 foot level constituting the loess plain whichfurnishes the location for the city of Leavenworth, a shortdistance away. West of the tunnel, also, the loess slopesrapidly upwards to the same level. The most conclusive witness to the original and undis-turbed character of the deposit in which the tunnel was exca-vated will be seen from a study of the accompanying bottom of the tunnel is on a rock exposure of limestonewhose outcrop extends from B to the side ravine, where, aftera short interruption, it appears on the other side westward to MAN IN THE MISS
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