In 1890, in connection with Doctor Foshay, the writer discussed somewhat briefly the abandoned fluvial plains of Beaver river, and attention was called to the evidences of the direction of flow of the stream that eroded the fluvial plain that is now found high above the present stream level*. With the evidence that is furnished of the ancient slope by the fragments that are still to be found, attention is here specially directed to the evidence furnished by pot-holes found on the old river bed near Rock point.
The life history of Beaver river may be divided into a number of stages. One of the earlier stages is the time when it formed the line of northern discharge for the upper Ohio drainage, the fluvial plain above mentioned forming one of the later beds of the river at this stage of its history. This stage . . .