Page:The Journal of geology (IA journalofgeology11893univers).pdf/202

here, therefore, appear to be essentially the same as on other tributaries of the region which are crossed by the group of later moraines, and which seem to indicate profound excavation between the earlier and later drifts.

The hypothesis advanced in the paper, while not new in itself, having been among the multiple working hypotheses used by one or more students of the region, though not so far as known adopted by any one previously, is much more deserving of serious consideration than its predecessor, the Cincinnati ice dam. It have some elements of truth in it, i. e., a portion of the excavation of the rock below the old base-plane may have preceded the incursion of the glacial wash and even the glacial period. If this should prove true the effect will be to extend the importance of the earlier glacial epoch and to reduce the time necessarily attributed to the interglacial interval of excavation. The glacial formations of the lower Ohio and adjacent regions, however, seem to indicate a more complex hypothesis than this, or any previously advanced, which shall take cognizance of more than one glacial episode previous to the formation of the well-developed terminal moraines.

One session of the Geological Section was adjourned to permit members to listen to papers read before the Anthropological Section having a geological bearing. These were the "Evidence of Glacial Man in America," by G. Frederick Wright; and "The Antiquity of Man in America," by W J McGee. The former consisted essentially of a restatement of the supposed evidences of the existence of man contemporaneously with the glacial period found in the terraces at Madisonville and Newcomerstown in Ohio, and at Trenton, N. J. The latter consisted essentially of a discussion of the character of evidence required for the establishment of the antiquity of man. Emphasis was especially laid upon the distinction between legal evidence and scientific evidence.

In the first paper no new discoveries were announced nor any additional data of note added to previous evidence. On