Mr. Lewes is an author very little known in this country. This is the first work of his which has been reprinted. But in England he has considerable reputation among the higher class of readers and men of taste for his brilliant powers of mind and extensive acquirements. His Biographical History of Philosophy we have never seen, but we have observed allusions to it in other publications, exalting it to a very high rank among thoughtful books. For some time, if we are not mistaken, he was the chief literary critic of the Westminster Review, and many of his articles were marked by strong and deep thinking, a little injured by vagaries of expression. In a novel by such a writer we should naturally expect more than a mere love story, more than a narrative of incidents and representation of passions; and he has not disappointed expectation. Indeed one can easily see that the book is based on a philosophical system, and that more is meant than directly meets the eye. The characters and events all illustrate some problems in metaphysics and ethics, and refer more to the understanding than the imagination. The story does not lack interest, nor the personages character, but both are o'erinformed with meditation. Fine as the novel undoubtedly is, the author has not given it the requisite artistical finish to produce an harmonious impression. Speculation on matters connected with literature, art and politics, essays on the passions and the will, appear in their naked character amid romantic incidents and imaginative representation. The author, in short, ought to have made his book altogether didactic or altogether dramatic, to fulfill the requisitions of either department. Had he fused all his abstract thought and practical speculation in the alembic of the imagination, and accordingly represented all in the concrete form of character and events, t he result would have been a much better novel. _Euthanasy; or Happy Talk Toward the End of Life. By William Mountford, Author of Martyria, &c., &c. Boston: Crosby & Nichols. 1 vol. 12mo._