May 21 - 1901 Left Washington at 7.00 O.M. for Harrisburg to meet Mr. Crane for a two week buggy trip through the Silurian and Devonian rocks of Pa. Just before arriving at Bridgeton which is opposite the city of Harrisburg on the North bank of the Susquehanna, large deposits occur in the Ordovician. There would be many thousand feet of limestone here. This may be a good place to study the eastern Ordovician. Other way quarries are starting towards Pittston. Had lunch at Harrisburg and started out with Crane by 12.30. Passed over a very long bridge over the Susquehanna and then along the river to Oquannoc. At Marysville in Rye Twp., Perry Co., the Oquandaja is directly underlain by the highest beds of the Hamilton. This then is some indication of the old land barrier which are here visible. It passes east.