APS Member History

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1061	Name:	Jacob Duche
	Year Elected:
	Residency:	Resident
	Living? :	Deceased
	Birth Date:	4/26/1708
	Death Date:	9/28/1788

	Jacob Duché, Sr. (26 April 1708–28 September 1788) was a civil, military, and ecclesiastical officeholder and a member of the American Philosophical Society via his 1768 election to the American Society. Born in Philadelphia into a Huguenot family known for creating stoneware, he was elected to the Common Council in 1755, as alderman in 1757, and as mayor of Philadelphia in 1761. In the summer of 1755 his home was requisitioned as a hospital for soldiers arriving in the wake of General Braddock’s defeat. And the following spring, as troops were organized to defend the province against the French and their native allies, Duché was named colonel of the Philadelphia Regiment of Foot. He later served as a street commissioner and a justice of the peace. Duché was also active in religious affairs, serving as a vestryman of Christ Church and promoting the founding of St. Peter’s Church and St. Paul’s. He was present at the meeting of the vestry on July 4, 1776 when the church resolved to discontinue its customary prayers for the king in accordance with the recent congressional independence resolution. Duché was a director of the Library Company and served on the board of managers of the Pennsylvania Hospital. He was also a donor to the Academy and College of Philadelphia and a subscriber to the Silk Society. He signed the Non-Importation Agreement of 1765 but played no active role in the American Revolution. In 1777 his son, APS member Jacob Duché, Jr., was branded a traitor and departed for England. Seven years later Duché, Sr. joined him in Lambeth, London, where he died in 1788. His father-in-law Benjamin Duffield was an APS member. (PI)

1062	Name:	Charles Benjamin Dudley
	Year Elected:	1879
	Residency:	Resident
	Living? :	Deceased
	Birth Date:	1842
	Death Date:	12/21/1909

1063	Name:	Thomas H. Dudley
	Year Elected:	1880
	Residency:	Resident
	Living? :	Deceased
	Birth Date:	1819
	Death Date:	3/15/1893

1064	Name:	Edward Duffield
	Year Elected:
	Residency:	Resident
	Living? :	Deceased
	Birth Date:	4/30/1730
	Death Date:	7/12/1803

	Edward Duffield (30 April 1720–12 July 1803) was a clock and watchmaker and public officeholder, and a member of American Philosophical Society, elected in 1768. Born in Philadelphia, Duffield was by the 1740s a well-regarded craftsman who imported, repaired, and built clocks and watches. Additionally, he built up his business by working on side projects related to metal work, such as creating medal dies for the City of Philadelphia and peace medals for Native leaders who attended the conferences that produced the 1757 Treaty of Easton. In keeping with the increased interest in astronomy generated by the Transit of Venus, the APS commissioned Duffield to build the timepiece used to observe the 1769 Transit of Mercury. Growing more settled and successful in his business, Duffield began holding public offices in the city, among them regulating the night watch and street lamps, serving as inspector of the Walnut Street jail, and as befitting his skill set, maintaining the State House clock from 1762 until APS member David Rittenhouse assumed the responsibilities in 1774. That year, Duffield removed to his countryside estate Benfield and began experimenting with various farming techniques. He was not active in politics leading up to the American Revolution, but he was seized by the British in 1778. After the war, he returned to Benfield, where he continued to support local educational institutions such as the Byberry Library Company and Lower Dublin Academy. He was a long-time friend of Benjamin Franklin and served as an executor to Franklin’s will. His son Benjamin Duffield was an APS member. (PI)

1065	Name:	Samuel Duffield
	Year Elected:
	Residency:	Resident
	Living? :	Deceased
	Birth Date:	1732
	Death Date:	11/27/1814

1066	Name:	George Duffield
	Year Elected:	1779
	Residency:	Resident
	Living? :	Deceased
	Birth Date:	1732
	Death Date:	2/2/1790

1067	Name:	Benjamin Duffield
	Year Elected:	1786
	Residency:	Resident
	Living? :	Deceased
	Birth Date:	1753
	Death Date:	12/13/1799

1068	Name:	Raymond S. Dugan
	Year Elected:	1931
	Class:	1. Mathematical and Physical Sciences
	Residency:	Resident
	Living? :	Deceased
	Birth Date:	1878
	Death Date:	8/31/1940

1069	Name:	Banjamin M. Duggar
	Year Elected:	1921
	Class:	2. Biological Sciences
	Residency:	Resident
	Living? :	Deceased
	Birth Date:	1872
	Death Date:	9/10/1956

1070	Name:	Dr. Catherine Dulac
	Institution:	Harvard University; Howard Hughes Medical Institute
	Year Elected:	2019
	Class:	2. Biological Sciences
	Subdivision:	208. Plant Sciences
	Residency:	Resident
	Living? :	Living
	Birth Date:	1963

	Catherine Dulac is a Howard Hughes Medical Institute Investigator, Higgins Professor of Molecular and Cellular Biology and Lee and Ezpeleta Professor of Arts and Sciences at Harvard University. Her work explores the identity and function of neural circuits underlying instinctive social behaviors in mice, and the role of genomic imprinting in the adult and developing brain. She grew up in Montpellier, France, graduated from the Ecole Normale Supérieure, Paris, and received her PhD from the University of Paris VI. She was a postdoctoral fellow at Columbia University and joined the faculty of Harvard as a junior faculty in 1996, before becoming full professor in 2001, and Chair of Harvard's Department of Molecular and Cellular Biology from 2007 until 2013. She is a member of the US National Academy of Sciences, and of the French Academy of Sciences, and a fellow of the American Academy of Arts and Sciences and the American Association for the Advancement of Science. She is a recipient of multiple awards including the Richard Lounsbery Award, the National Academy’s Pradel Research Award, the Edward M. Scolnick Prize in Neuroscience, the Karl Spencer Lashley Award from the American Philosophical Society, and the 2021 Breakthrough Prize for Life Sciences.

1071	Name:	Daniel Dulany
	Year Elected:
	Residency:	Resident
	Living? :	Deceased
	Birth Date:	6/28/1722
	Death Date:	3/19/1797

	Daniel Dulany, Jr. (28 June 1722–17 March 1797) was a public officeholder, lawyer, businessman, and a member of the American Philosophical Society, elected in 1768. Born in Annapolis, Maryland to the colony’s Attorney General, Dulany grew up in a wealthy and well-connected family, alighting to England’s Eton College before passing through Cambridge University to the Middle Temple. Barred in 1746, he returned to practice law in Maryland in 1747. Quickly esteemed as a lawyer and constitutional thinker, he rose through Maryland’s Lower House of the Assembly (elect. 1749, 1751, 1754) to an appointment on the Council as Secretary of Maryland in 1757, serving until its dissolution in 1776. His support of Proprietary government enabled his contemporaneous enjoyment of other powerful and lucrative posts. But said support stopped short of absolute: while Dulany believed Parliament had the right to levy trade duties and fees, he rose to renown via his influential rebuttal of the Stamp Act (1765) and the proposition of colonials’ “virtual representation” in Parliament. His Considerations on the propriety of imposing taxes in the British colonies (1765) reasserted consent to taxation as a core principle of the English constitution, and argued British self-interest, not generosity, compelled defending the colonies in the Seven Years’ War (1754–63). Widely reprinted and even cited by William Pitt during Parliament’s repeal debates, it set Dulany’s star aloft, until his support of the extension of a tobacco tax by Gubernatorial fiat drew Charles Carroll of Carrollton into politics for the first time, not least because Dulany himself benefited financially from the tax. The ensuing newspaper debate established Carroll’s patriot bone fides at Dulany’s expense. Dulany’s resist-not-rebel stance proved too conservative as the imperial crisis worsened. Through self-exile and confiscations he remained in Maryland until his death in Baltimore in 1797. (PI, ANB)

1072	Name:	Dr. Renato Dulbecco
	Institution:	Salk Institute
	Year Elected:	1993
	Class:	2. Biological Sciences
	Subdivision:	202. Cellular and Developmental Biology
	Residency:	Resident
	Living? :	Deceased
	Birth Date:	1914
	Death Date:	February 19, 2012

	A distinguished research professor and president emeritus of the Salk Institute, Italian-born Renato Dulbecco made fundamental contributions to understanding the uncontrolled growth of cells that occurs in cancer. He is best known for his discovery that tumor viruses cause cancer by inserting their own genes into the chromosomes of infected cells. This finding was one of the first clues to the genetic nature of cancer and led to Dr. Dulbecco being awarded a Nobel Prize in 1975. Dr. Dulbecco subsequently began studying the origins and progression of tumors of the breast, using monoclonal antibodies, tools of molecular biology that can identify cells by their chemical signatures, to characterize the tumor cells. In 1986 Dr. Dulbecco launched the idea of studying all human genes, starting the worldwide Human Genome Project. He is the author of The Design of Life (1987), a work that represents, in his words, "the exciting developments that have taken place in biology with accelerated rhythm since the '50s." The last chapter of this book, "A Life Odyssey," is a magisterial summary of the origin and history of living things over the past nearly four billion years.

1073	Name:	William Dunbar
	Year Elected:	1800
	Residency:	Resident
	Living? :	Deceased
	Death Date:	10/-/1810

1074	Name:	Carl O. Dunbar
	Year Elected:	1942
	Class:	2. Biological Sciences
	Residency:	Resident
	Living? :	Deceased
	Birth Date:	1891
	Death Date:	4/-/1980

1075	Name:	Louis Duncan
	Year Elected:	1886
	Residency:	Resident
	Living? :	Deceased
	Birth Date:	1863
	Death Date:	2/13/1816

1076	Name:	Dr. Otis Dudley Duncan
	Institution:	University of California, Santa Barbara
	Year Elected:	1973
	Class:	3. Social Sciences
	Subdivision:	301. Anthropology, Demography, Psychology, and Sociology
	Residency:	Resident
	Living? :	Deceased
	Birth Date:	1921
	Death Date:	November 16, 2004

1077	Name:	James Dundas
	Year Elected:	1851
	Residency:	Resident
	Living? :	Deceased
	Birth Date:	1785
	Death Date:	7/4/1865

1078	Name:	Robley Dunglison
	Year Elected:	1832
	Residency:	Resident
	Living? :	Deceased
	Birth Date:	1798
	Death Date:	4/1/1869

1079	Name:	John Dunlap
	Year Elected:	1784
	Residency:	Resident
	Living? :	Deceased
	Birth Date:	1746
	Death Date:	11/27/1812

1080	Name:	Thomas Dunlap
	Year Elected:	1837
	Residency:	Resident
	Living? :	Deceased
	Birth Date:	1792
	Death Date:	7/11/1864

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