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HAMILTON'S LECTURES, embracing the METAPHYSICAL and LOGICAL COURSES; with Notes, from Original Materials, and an Appendix, containing the Author's Latest Development of his New Logical Theory. Edited by Rev. HENRY LONGUEVILLE MANSEL, B. D., Prof. of Moral and Metaphysical Philosophy in Magdalen College, Oxford, and JOHN VEITCH, M. A., of Edinburgh. In two royal octavo volumes, viz.,

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G. & L., by a special arrangement with the family of the late Sir William Hamilton, are the authorized, and only authorized, American publishers of this distinguished author's matchless LECTURES ON METAPHYSICS AND LOGIC.

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LOOMIS' ELEMENTS OF GEOLOGY; adapted to Schools and Colleges. With numerous Illustrations. By J. R. LOOMIS, President of Lewisburg Uni versity, Pa. 12mo, cloth, 1.25.

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PEABODY'S CHRISTIANITY THE RELIGION OF NATURE. Lectures delivered before the Lowell Institute in 1863, by A. P. PEABODY, D. D., LL. D., Preacher to the University, and Plummer Professor of Christian Morals, Harvard College, Royal 12mo, cloth, 1.50.

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PALEY'S NATURAL THEOLOGY: Illustrated by forty Plates, with Selections from the Notes of Dr. Paxton, and Additional Notes, Original and Selected, with a Vocabulary of Scientific Terms. Edited by JOHN WARE, M. D. Improved edition, with elegant illustrations. 12mo, cloth, embossed,

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YOUNG LADIES' CLASS BOOK: a Selection of Lessons for Reading Prose and Verse. By EBENEZER BAILEY, A. M. Cloth, embossed, 1.25.

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AGASSIZ AND GOULD'S PRINCIPLES OF ZOÖLOGY; Touching the Structure, Development, Distribution, and Natural Arrangement, of the RACES OF ANIMALS, living and extinct, with numerous Illustrations. For the use of Schools and Colleges. Part I. COMPARATIVE PHYSIOLOGY. By LOUIS AGASSIZ and AUGUSTUS A. GOULD. Revised edition. 1.50.

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This volume contains the grand generalizations of Ritter's life-work, the Erdkünde, in eighteen volumes; his lectures on the Relations of Geography and History, and a number of important Qapers on Physical Geography.

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