Produced by David Widger FRUITS OF PHILOSOPHY A TREATISE ON THE POPULATION QUESTION By Charles Knowlton Edited by Charles Bradlaugh and Annie Besant PUBLISHERS' PREFACE. The pamphlet which we now present to the public is one which has been lately prosecuted under Lord Gampbell's Act, and which we republish, in order to test the right of publication. It was originally written by Charles Knowlton, M. D., whose degree entitles him to be heard with respect on a medical question. It was first published in England, about forty years ago, by James Watson, the gallant radical, who came to London and took up Richard Carlile's work, when Carlile was in jail. He sold it, unchallenged, for many years, approved it, and recommended it. It was printed and published by Messrs. Holyoake & Co., and found its place, with other works of a similar character, in their "Freethought Directory," of 1853, and was thus identified with freethought literature at the then leading freethought _depot_ Mr. Austin Holyoake, working in con-junction with Mr. Bradlaugh at the _National Reformer_ office, Johnson's Court, printed and published it in his turn, and this well-known freethought advocate, in his "Large or Small Families," selected this pamphlet, together with R. D. Owen's "Moral Physiology" and the "Elements of Social Science," for special recommendation. Mr. Charles Watts, succeeding to Mr. Austin Holyoake's business, continued the sale, and, when Mr. Watson died, in 1875, he bought the plates of the work (with others) from Mrs. Watson, and continued to advertise and to sell it until December 23, 1876. For the last forty years the book has thus been identified with freethought, advertised by leading freethinkers, published under the sanction of their names, and sold in the headquarters of freethought literature. If, during this long period, the party has thus--without one word of protest--circulated an indecent work, the less we talk about freethought morality the better; the work has been largely sold, and, if leading freethinkers have sold it--profiting by the sale--through mere carelessness, few words could be strong enough to brand the indifference which thus scattered obscenity broadcast over the land. The pamphlet has been withdrawn from circulation in consequence of the prosecution instituted against Mr. Charles Watts, but the question of its legality or illegality has not been tried; a plea of "Guilty" was put in by the publisher, and the book, therefore, was not examined, nor was any judgment passed upon it; no jury registered a verdict, and the judge stated that he had not read the work.