=Duffield, John Thomas.= _Pa._, 1823-1901. A Presbyterian clergyman who was professor of mathematics in Princeton College for many years, and published The Princeton Pulpit and many religious monographs. =Duffield, Samuel Augustus Willoughby.= _L. I._, 1843-1887. Son of G. Duffield, 2d. A Presbyterian clergyman of Bloomfield, New Jersey. English Hymns, their Authors and History; Latin Hymn-Writers and their Hymns; Warp and Woof, a Book of Verse. _Fu._ =Duffield, William Ward.= _Pa._, 1823- ----. An engineer of Kentucky who was a brigadier-general in the Federal army during the Civil War. School of the Brigade and Evolutions of the Line. =Duganne, Augustine Joseph Hickey.= _Ms._, 1823-1884. A journalist of New York city chiefly known as a poet. During the Civil War he served in the Federal army, and was for some time a captive in Southern prisons. Among his writings are Prison Life in the South; Camps and Prisons; History of Governments; The Lydian Queen, a tragedy; Home Poems; Parnassus in Pillory, a satire. =Dugdale, Richard L.= _F._, 1841-1883. A writer on sociology. The Jukes, or Heredity in Crime; Further Studies of Criminals. =Duhring, Julia.= _Pa._, 1836- ----. An essayist who has published Philosophers and Fools; Gentlefolks and Others; Amor in Society; Mental Life and Culture. _Lip._ =Duhring, Louis Adolphus.= _Pa._, 1845- ----. Brother of J. Duhring, _supra_. A physician of Philadelphia, prominent as a dermatologist. Atlas of Skin Diseases; Practical Treatise on Diseases of the Skin; Epitome of Skin Diseases; Cutaneous Medicine. _Lip._ =Duke, William.= _Md._, 1757-1840. An Episcopal clergyman and educator of Maryland who published A Clew to Religious Truth. =Dulany, Daniel.= _Md._, 1721-1797. A noted Maryland statesman. Considerations on the Propriety of Imposing Taxes on the British Colonies. =Dulles, Charles Winslow.= _E. I._, 1850- ----. A surgeon of Philadelphia. What to Do First in Accidents or Poisoning; What to Do First in Accidents and Emergencies; Accidents and Emergencies. =Dulles, John Welsh.= _Pa._, 1823-1887. A Presbyterian clergyman of Philadelphia, at one time a missionary to India. The Soldier’s Friend; Life in India; The Ride Through Palestine. =Dummer, Jeremiah.= _Ms._, _c._ 1680-1739. A noted scholar who was colonial agent for Massachusetts in London, 1710-21, and was a political friend of Bolingbroke. A Letter to a Noble Lord concerning the Late Expedition to Canada; A Defence of the New England Charters,--both excellent specimens of literary skill as well as patriotism. _See Tyler’s American Literature._ =Dumont, Mrs. Julia Louisa [Carey].= _O._, 1794-1857. A once noted educator of Vevay, Indiana. Life Sketches from Common Paths. =Dunbar, Charles Franklin.= _Ms._, 1830-1900. A professor of political economy at Harvard University from 1871. Chapters on The Theory and History of Banking. _Put._