Manual of Elementary Geology;

Sir Charles Lyell's

Principles of Geology;

Or, the Modern Changes of the Earth and its Inhabitants, considered as illustrative of Geology. A new and much enlarged edition. Illustrated with maps, plates, and wood-cuts. 1 vol. 8vo., of 850 pages. Price $2.25.

Sir Charles Lyell's

Or, the Ancient Changes of the Earth and its Inhabitants, as illustrated by Geological Monuments. A new and greatly enlarged edition. Illustrated with 500 wood-cuts. 1 vol. 8vo. Price $1.75.

*** The author of these works, stands in the very front rank of scientific men, and his works upon the science to which he has devoted his great powers and his indefatigable study, are the standard books upon these subjects.