Charles Porterfield Krauth, an American theologian, born in Martinsburg, Va., March 17, 1823. He is the son of the Rev. Charles Philip Krauth, former president of Pennsylvania college, Gettysburg. He graduated there in 1839, entered the Lutheran ministry in 1841, and was pastor successively of churches in Baltimore, Md., Winchester, Va., and Pittsburgh, Pa. In 1852-'3 he visited the Danish West Indies, and for three months of that time, during the severe prevalence of the yellow fever, preached in the Dutch Reformed church in St. Thomas. A sketch of his tropical experiences was published afterward under the title " A Winter and Spring in the Danish West Indies." He was pastor of St. Mark's Lutheran church in Philadelphia from 1859 to 1864, and in 1861 became editor of the " Lutheran and Missionary." In 1864 he was elected professor of systematic theology and church polity in the Lutheran theological seminary in Philadelphia, and in 1868 of intellectual and moral philosophy in the university of Pennsylvania, of winch he was elected vice provost in 1873. He has been for three successive terms president of the general council of the Lutheran church in America. He has been among the most active laborers in the liturgical movements of his church, edited " The Jubilee Service," and bore a prominent part in the preparation of the "Church Book," set forth by authority of the general council in 1869. He has gathered a large and valuable library, and has become distinguished as a Biblical and historical writer.

He is a member of the oriental and philosophical societies, the historical society of Pennsylvania, and the American committee cooperating with the British committee in revising the authorized version of the Scriptures. His chief distinction as an author is due to a work entitled " The Conservative Reformation and its Theology" (8vo., Philadelphia, 1871). He has also published " Three Essays on Poverty," and a number of special discourses and of dissertations in explanation and defence of the Augsburg confession, and has contributed largely to theological and literary periodicals, especially upon the internal history and relations of the authorized version of the Scriptures. He has translated Tholuck's commentary on John (1859), and Ulrici's review of Strauss (1874); and has edited Fleming's " Vocabulary of Philosophy," with an introduction and synthetical and bibliographical indexes (2d ed., 1860), and Berkeley's "Principles of Knowledge," with extended prolegomena, Ueberweg's notes, and a large amount of original annotation (1874).