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Entered, according to Act of Congress, in the year 1860, by

J. B. LIPPINCOTT & CO.,

In the Clerk's Office of the District Court of the United States for the Eastern District of Pennsylvania.

TO

THE CHURCHES,

AND TO

THE SCIENTIFIC PUBLIC

IN GENERAL;

AND IN PARTICULAR TO HIS

GRATEFULLY REMEMBERED ALMA MATER,

THE MOST DISTINCTIVELY SCIENTIFIC EDUCATIONAL INSTITUTION OF

THE COUNTRY,

THE U. S. MILITARY ACADEMY AT WEST POINT,

AND TO

THE MANY ACCOMPLISHED ALUMNI THEREOF,

HIS ESTEEMED FELLOW GRADUATES,

This Volume

IS RESPECTFULLY AND KINDLY INSCRIBED

BY THEIR FRIEND,

THE AUTHOR.

THE topics discussed in the following pages may be regarded either separately or in their mutual relations. With this twofold view, accordingly, the discussions are conducted. Each is intended to be complete in itself, and yet to constitute an appropriate part of a larger whole.

Trusting that he may, in the series, have done something toward promoting right convictions on great questions, with regard to which science is sometimes represented as at issue with Holy Scripture, the author commits it to His blessing, "without whom nothing is strong, nothing is holy."

LEXINGTON, VIRGINIA, June 1, 1860.

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