Looking to West House side. from opposite side. Cut see what happens here here. Atcic Laurantia Laurantia Falls of Chocotomac! 24.2. Just at the Falls on the east side I leaned down and saw the contact between the Laurentian and Trenton. The old floor is very con- colidate densed and in sure the crevices the material of the in- rading den has filled them. Fossils occur in these filled crevices of the Laurentian. There are ? Coccinimum and a large Placophora here. A few feet higher in the regular bedded limestone I saw Trinisculus concentricus, Ceramus plenex antemius, Calymene calliceps/hala, Dalmanella testudivaria, Comularia. At the contact there is no evidence of sand as the Laurentian is very smooth. There should be sand somewhere, but it is not at the spot. Then went up the stream to the upper dam. Here the limestone seems to be at the very top for it is Hack with Hack shale