AUTHOR OF A TREATISE ON HUMAN PHYSIOLOGY, HISTORY OF THE INTELLECTUAL DEVELOPMENT OF EUROPE, HISTORY OF THE AMERICAN CIVIL WAR, AND OF MANY EXPERIMENTAL MEMOIRS ON CHEMICAL AND OTHER SCIENTIFIC SUBJECTS WHOEVER has had an opportunity of becoming acquainted with the mental condition of the intelligent classes in Europe and America, must have perceived that there is a great and rapidly-increasing departure from the public religious faith, and that, while among the more frank this divergence is not concealed, there is a far more extensive and far more dangerous secession, private and unacknowledged.…
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