counterfeit, and become followers of a man, a party, or a sect. Nor do we wish to deceive them. We desire to set before them the doctrine and law of the Catholic Church in their purity and integrity, that they may have the opportunity of embracing them for their temporal and eternal salvation. We have had this end in view in writing and publishing the _Problems of the Age;_ and, knowing well the delicacy and difficulty of the task, we have spared no pains to study the decisions of councils and the Holy See, to compare and weigh the statements of the most approved theologians, and to make no explanations which we were not satisfied are tenable, according to the received criterion of orthodoxy. We do not desire, however, or exact that any of our statements should be taken upon trust by any one. We have written for thinking and educated persons, who have need of light upon certain dark points of Christian doctrine; who are in earnest, and willing to take the time and trouble necessary for learning the truth. Such persons, if they read only English, will find all that is requisite, in addition to the citations made in the _Problems of the Age_, in _Möhler's Symbolism_. Scholars and theologians may satisfy themselves more fully by the aid of the collection of dogmatic and doctrinal decrees contained in Denziger's _Enchiridion_, and of the theologies of Billuart, Perrone, and Kenrick, the first of whom is a strict Thomist, the second a Jesuit, and the third of no particular school. In the exposition of the more antique and technically Augustinian tenets, the works of Berti, Estius, Antoine, Cardinal Noris, and Cardinal Gotti can be consulted. There are many other books relating to the Jansenist controversy, in Latin, French, and English, from which the fullest information can be obtained in regard to the history of the desperate struggle which that pseudo-Augustinian heresy--so nearly allied to the more moderate Calvinism and to one form of Anglicanism--made to gain a foothold in the church, and its thorough and complete discomfiture by the learning and logic of the great Thomist and Jesuit theologians, and the authority of the Holy See.