Such a theory would seem also to preclude all rational calculations respecting the future progress and prospects of the race. For what ground can exist for any prognostication in regard to the ulterior advancement or ultimate destiny of man, if it be true that, in his past history, Fetishism has passed into Polytheism, and Polytheism into Monotheism, without any extraneous instruction, and by the mere action of those inherent laws to which humanity is subject? And, still more, if it be further true that even now the human mind is in a state of transition, passing through the crisis of Metaphysical doubt towards the goal of Positive Atheism, who shall assure us that this will be its last and final metamorphosis? It does appear to us to be one of the most singular and perplexing anomalies of his elaborate system, that he can dogmatize so confidently on the _terminus ad quem_ of human progress, when from the _terminus a quo_ there has been, according to his own account, a series of variations so wonderful, and a succession of states so diverse and opposite, as those which he describes. And yet he pronounces oracularly that Positive Science is the ultimate landing-place of human thought, and that universal Atheism is the final barrier which must needs close and terminate the long series of developments. We have spoken sternly of his system; we have no wish to speak harshly of the man. Had we any disposition to do so, there is more than enough in the personal explanation, prefixed to the closing volume of his work, effectually to disarm us. We have too much sympathy with the trials of a vigorous but eccentric mind, struggling in untoward circumstances, and against an adverse tide, to maintain a position of honorable independence, to say a word that could wound the feelings or injure the prospects of a man of science. But it is not unkind to add that his life might have been a more prosperous one had he devoted himself to the pursuits of Science, without assailing the truths of Religion; and that his fame would have been at once more extensive and more enduring had it been left to repose on his Classification or Hierarchy of the Sciences, without being associated with the more doubtful merits of his fundamental law of Man's Development. SECTION IV. THEORY OF _ECCLESIASTICAL_ DEVELOPMENT.--J. H. NEWMAN. This particular phase of the general theory bears less directly on the subject of our present inquiry than either of the _three_ which have already passed under review, and yet it has recently been applied in such a way as may entitle it to a passing notice.