Softcover book reprinted in 1963 from the 1904 original. Contains scholarly coverage of a survey of the Miocene deposits of Maryland and stratigraphic relations of the various epochs. Includes relations to other states and regions, the Chesapeake Group, the Calvert Formation, the Choptank Formation and others. After deposits and stratigraphy the book goes on to give a review of the systematic paleontology of the Miocene based upon the fossil evidence of the day.