Annual Report on the Geological Survey of Pennsylvania (C...
Rogers, Henry D. Excerpt from Annual Report on the Geological Survey of PennsylvaniaSir - In compliance with the third section of the act Of 29th March, 1836, 'entitled, An Act to provide for a Geological and Mi neralogical Survey of the State, I herewith transmit to you the Sixth Annual Report on' the' Geological Survey Of Pennsylvania, as made to me by Henry D. Rogers, Esq., State Geologist.From the limited examination which I have made Of this report, it is...