A Geological History of Manhattan or New York Island - Together With a Map of the Island, and a Suite of Sections, Tables and Columns, for the Study of Geology, Particularly Adapted for the American Student #230363

Definition of Geology. — Geology is the study of the rocks, and all earthy and mineral properties, that form the crust of the globe, which man and his cotemporaries now inhabit of all the apparent, past changes it has undergone by volcanoes, floods, earthquakes, and other lesser causes, such as heat and cold, the wear and tear of its surface, by rains or any thing else, which alters, or occasions a dis placement of any Of its materials.