MAHAN
MAHAN
was trustee of Lane Theological seminary, 1831-36,
and resigned because the board of directors for-
bade the discussion of the question of slavery
among the students. He received the degree of
D.D. from Hillsdale college, Micii., iu lHo^, and
that of LL.D. from Adrian in 1877. He is the
author of: Scripture Doctrine of Cliristian Per-
fection (1839); System of Intellectual Philosophy
(1845); The Doctrine of the Will (1840); The
True Believer, his Character, Duties and Privi-
leges (1847); The Science of Moral Philosophy
(1848); Election and the Influence of the Holy
Spirit (1851); Modern Mysteries Explained and
Exposed (185.1); The Science of Logic (1857);
Science of Natural Theology (1867); Tlieism and
Anti-Theism in their Relations to Science (1873);
The Phenomena of Spiritualism Scientifically Ex-
plained and Exposed (1876); Critical History of
the late American War (1877); A System of
Mental Philosophy (1882); Critical History of
Philosophy (1883) and contributions to the reli-
gious and educational f)eriodicals of the United
States and England. He died in Eastbourne,
England, April 4, 1889.
MAHAN, Dennis Hart, engineer, was born in New York city, April 2, 1802; son of John and Mary (Cleary) Mahan. His parents removed to Norfolk, Va., and he was graduated at the U.S. Military academy at the head of the class of 1824 and assigned to the corps of engineers. He was acting assistant professor of mathematics at West Point, 1821-24; 2d lieutenant of engineers, 1824-83; assistant professor of mathematics, 1824-25, principal assistant professor of engineer- ing, 1825-26, student of engineering in Europe, 1826-30, and was attached to the military scliool of engineers and artillery, Metz, France, 1829-30. He was acting professor of engineering, West Point, 1830-32; resigned from the engineer corps, Jan. 1, 1832, and was professor of engi- neering, U.S. Military academy, 1832-71, being dean of the faculty, 1838-71. He was appointed by Governor Floyd of Virginia a member of the board of engineers to decide the true and proper route of the Baltimore and Ohio railroad to Wheeling, Va., in 1850, and in 1871 was elected an overseer of the Thayer School of Civil En- gineering. He was elected a member of the Geographical society of France in 1828; was an
original incorporator of the National Academy
of Sciences in 1803, and a fellow and member of
various learned societies. He received the hon-
orary degree of A.M. from Brown and from the
College of New Jersey, Princeton, in 1837; that
of LL.D. from William and Mary and from
Brown in 1852, and from Dartmouth in 1867. His
portrait by Weir is iu the library of the Academy,
at West Point. He was married to Mary Helena
O'Klill and they had sons: Alfred Thayer Mahan
(q.v.); Maj. Frederick Augustus Mahan, U.S.A.,
retire<l, April 2, 1900, and Commander Dennis
Hart Malian, U.S.N. The board of visitors
to the Academy in 1871 recoumiended to the
President that he be retired, and although Presi-
dent Grant assured him he would be retained,
the decision of the board so affected his mind as
to cause him to jump overboard from the steam-
er bound for New York when opposite Stony
Point, and he was drowned. He is the author
of: Treatise on Field Fortifications (1836)
Elementary Course of Civil Engineering, (1837,
rewritten, 1868); Elementary Treatise on Ad-
vanced Guard, Outpost and Detachment Sei'vice
of Troops and Strategy (\8i7, improved edition,
1862); Elementary Treatise on Industrial Draio-
ings (1853); Descriptive Geometry, as Applied to
the Drawing of Fortifications and Siereotomy
(1864); Military Engineering, including Field
Fortifications, Military Milling and Siege Opera-
tions (1865); Permanent Fortifications (1867).
He also edited with additions an American edi-
tion of Moseley's "Meclianical Principles of En-
gineering and Architecture" (1850). He died
near Stony Point. N.Y., Sept. 16, 1871.
MAHAN, Milo, educator and authoi", was born in Suffolk, Va., May 24, 1819. Ho was a student at St. Paul's college, Flushing, Long Island; was ordered deacon in the Protestant Episcopal church in 1845, and ordained priest the same year. He was rector of Grace church, Jersey City, N.J., 1848-50, assistant rector of St. Mark's church, Philadelphia, Pa., 1850-51; was professor of ecclesiastical history in the General Theologi- cal seminary. New York city, 1851-64, and rector of St. Paul's church, Baltimore, Md., 1864-70. He was married, Aug. 24, 1853, to Mrs. Mary G. Lewis, daughter of Redwood Fisher, of Phila- delphia. He received the degree of D.D. from the College of William and Mary, Virginia, 1852. He is the author of: The Exercise of Faith (1831); History of the Church during the First Tliree Cen<Mrtes(1860; 2d ed., including seven centuries, 1872); Reply to Colevso (1863); Palmoni, a Free Inquiry (1864); Comedy of Canonization (1868). His works were collected and pub- lished, with a memoir, by the Rev. John Henry Hopkins, Jr. (3 vols., 1872-75). He died in Bal- timore, Md., Sept. 3, 1870.
