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.