It is not possible to state the amount of good which this book has done, is doing, and is to do. Mr. Eugene Schuyler, in the preface to the Russian novel which he has recently done the public the service to translate, informs us that the publication of a little book in Russia contributed powerfully to the emancipation of the Russian serfs. The book was merely a collection of sketches, entitled "The Memoirs of a Sportsman"; but it revealed serfdom to the men who had lived in the midst of it all their lives without ever seeing it. Nothing is ever _seen_ in this world, till the searching eye of a sympathetic genius falls upon it. This Russian nobleman, Turgenef, noble in every sense, saw serfdom, and showed it to his countrymen. His volume was read by the present Emperor, and _he_ saw serfdom; and he has since declared that the reading of that little book was "one of the first incitements to the decree which gave freedom to thirty millions of serfs." All the reading public of Russia read it, and _they_ saw serfdom; and thus a public opinion was created, without the support of which not even the absolute Czar of all the Russias would have dared to issue a decree so sweeping and radical. We cannot say as much for "Uncle Tom's Cabin," because the public opinion of the United States which permitted the emancipation of the slaves was of longer growth, and was the result of a thousand influences. But when we consider that the United States only just escaped dismemberment and dissolution in the late war, and that two great powers of Europe were only prevented from active interference on behalf of the Rebellion by that public opinion which "Uncle Tom's Cabin" had recently revived and intensified, we may at least believe, that, if the whole influence of that work could have been annihilated, the final triumph of the United States might have been deferred, and come only after a series of wars. That book, we may almost say, went into every household in the civilized world which contained one person capable of reading it. And it was not an essay; it was a vivid exhibition;--it was not read from a sense of duty, nor from a desire to get knowledge; it was read with passion; it was devoured; people sat up all night reading it; those who could read read it to those who could not; and hundreds of thousands who would never have read it saw it played upon the stage. Who shall presume to say how many soldiers that book added to the Union army? Who shall estimate its influence in hastening emancipation in Brazil, and in preparing the amiable Cubans for a similar measure? Both in Cuba and Brazil the work has been read with the most passionate interest.