Το γαρ αυτο νοείν έστίν τε και είναι. - Parmenides.

THIRD EDITION.

WITH AN APPENDIX OF ADDITIONAL MATTERS, INCLUDING A NOTICE

OF THE RECENTLY DISCOVERED NORTHUMBERLAND MSS.

NEW YORK:
PUBLISHED BY HURD AND HOUGHTON.
BOSTON: H O. HOUGHTON AND COMPANY.
Cambridge: The Riverside Press.

1875.

Entered according to Act of Congress, in the year 1866, by

HURD AND HOUGHTON,

In the Clerk's Office of the District Court for the Southern District at

New York.

RIVERSIDE, CAMBRIDGE:
STEREOTYPED AND PRINTED BY

8. 0. HOUGHTON AND COMPANY.

TO LIIS EXCELLENCY

THE HONORABLE THOMAS C. FLETCHER,

GOVERNOR OF THE STATE OF MISSOURI,

AS A WORTHY REPRESENTATIVE

OF THE CIVIL AND SOCIAL PROGRESS OF THE AGE,

WHEREIN THE ARTS AND SCIENCES,

PHILOSOPHY, AND RELIGIOUS CULTURE,

ARE TO FIND FREE COURSE AND BE GLORIFIED,

TIIS UUMBLE CONTRIBUTION TO THE LITERATURE OF THE TIME

IS RESPECTFULLY DEDICATED BY:

THE AUTHOR.