Robert Owen's opening speech, and his reply to the Rev. Alex. Campbell, in the recent public discussion in Cincinnati, to prove that the principles of all religions are erroneous, and that their practice is injurious to the human race : Also, Mr. Owen's Memorial to the republic of Mexico, and a narrative of the proceedings thereon ... for the purpose of establishing a new political and moral system of government, founded on the laws of nature, as explained in the above debate with Mr. Campbell