OUTLINES of GEOLOGY.

INTRODUCTION.

The objects of the science denominated Geology .—The shape of the earth and the other planets af-fected by the respective velocities of their rotarymotion.—Density of the earth.—Theoreticaldivision of rocks and mountains into primary,intermediate, and secondary.—Arrangement ofthe mineral districts of England.—The presentcontinents once covered by the ocean : existingproofs of this in England, Spain, South Ameri-ca , and various parts of the world.—Fossil re-mains of shellfish and zoophytes imbedded inrocks, sometimes intermixed tvilh those of qua-drupeds.—Inferences respecting the former con-dition of the globe.

W iiex we survey the globe we inhabit,where the solid parts of the surface are notcovered by soil or loose materials, we observerude masses of stone or rock lying in confu-sion upon each other; or should we perceivesome regularity in their position extending

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