HAY, Charles Augustus, theologian, born in York, Pennsylvania, 11 February, 1821. He was graduated at Pennsylvania college, Gettysburg, in 1839, and at the Lutheran theological seminary in that town in 1841. He continued his studies in 1841-'3 at Berlin and Halle, Germany, and during these years travelled extensively on the continent of Europe and in Great Britain. After his return in 1843 he became pastor in 1844 of the Lutheran congregation at Middletown, Maryland From this place he was called to the chair of Hebrew and German in the theological seminary at Gettysburg, Pennsylvania, which he held from 1844 till 1848. He was pastor at Hanover in 1848-'9, and at Harrisburg, Pennsylvania, in 1849-'65. In the latter year he was again called to the theological seminary as professor of Hebrew, German, biblical criticism, and pastoral theology. He has discharged the duties of this office for more than twenty years, and takes a high rank as a theologian and educator in his church. He belongs to the conservative wing of the general synod, and is an advocate of distinctive Lutheranism. Together with the Reverend H. E. Jacobs, D. D., he translated from the German, Dr. Schmid's "Doctrinal Theology of the Evangelical Lutheran Church" (1876; revised ed., 1887), and is a frequent contributor to the "Bibliotheca Sacra," " Evangelical Review," "Quarterly Review," and other periodicals.