In this book, the argument for the Papal Supremacy from Scripture and Tradition is presented in a clear and cogent manner, with solid learning, admirable reasoning, and in a lucid and charming style, rendering it perfectly intelligible to any reader of ordinary education. It is impossible for any sophistry or cavilling to escape from the irresistible force of Mr. Allies's reasoning. It is a moral demonstration of the perpetual existence and divine institution of the papacy in the Christian church. An attempt has been made to detract from its force by representing that the author himself had in a previous work drawn a different conclusion from the same premises. This objection would have force in relation to a matter of metaphysical demonstration; but has none at all in the present case, which is one of moral demonstration arising from the cumulative force of a great number of separate probabilities. The former conclusion which the author drew was not one totally opposite to his later one, but merely a partial, defective conclusion in the same line. In his first book be admitted the primacy of the Roman See, but not in its full extent, or complete application to the state of bodies not in her communion. Preconceived prejudices, and an imperfect grasp of the logical and theological bearings of the question, hindered him from comprehending fully the nature of the primacy, whose existence he admitted. His second book is, therefore, a legitimate development from the principles of the first, although this very development has led him to quite opposite conclusions respecting certain important facts.