with the natural changes of its surface, caused by floods, earthquakes, &c. together with the principles of meteorology, and astronomy ; with the theory of the tides, &c. : preceded by an extensive selection of astronomical, and other definitions ; and illustrated by a great variety of problems, questions for the examination of the student &c. &c. : designed for the instruction of youth / by Thomas Keith. -- Readex Microprint, [19--]. -- (Landmarks ; 2 ; monographs). h.