Academy of Natural Sciences of Drexel University


A group of six amateur scientists with an interest in natural history gathered at a private residence at High and Second Streets in Philadelphia on January 25, 1812, and founded the Academy of Natural Sciences of Philadelphia for, according to its charter, “the encouragement and cultivation of the Sciences” and “the advancement of useful learning.” These enthusiastic, mostly young men, soon joined by entomologist and conchologist Thomas Say (1787–1834), created what has become the oldest institution of natural history in America. The academy continued to produce important original research in biological and molecular systematics, ecology, and biodiversity as it forged important partnerships in the region and the world and eventually affiliated with Drexel University.

In the early nineteenth century, Philadelphia was already home to the American Philosophical Society, the Philadelphia Museum established by Charles Willson Peale (1741–1827), and a thriving medical community. But the academy founders, members of the city’s growing professional class, felt excluded and poorly represented by the city’s established elite institutions. For its first home, the young academy rented rooms above a milliner at 94 N. Second Street that included meeting space, a reading room, and a room to keep their growing specimen collection. The first major collection acquired by the academy, a large collection of minerals purchased from prominent local geologist and congressman Adam Seybert (1773–1825) in the summer of 1812, provided the basis for the first series of lectures for the members.

Image of a dinosaur skeleton, potentially collected during the museums late nineteenth century interest in Palentology.
Dinosaur Hall is a favorite destination for families at the Academy of Natural Sciences. In the late nineteenth century, the field of paleontology occupied most of the museum’s time and resources, spearheaded by the museum’s renowned paleontologists Joseph Leidy and Edward Drinker Cope. (Visit Philadelphia)

While the academy’s founders considered the creation and diffusion of knowledge about the natural world important for its own sake, they also enthusiastically embraced the idea that the study of natural science built character in urban young men and was a patriotic duty that would place the sciences in the young United States on an equal level with those in the Old World. Even though membership was restricted to only those people nominated by two current members, the academy continued to grow. By 1817 it became clear that if it were to take part in the international exchange of scientific theories and discoveries as well as specimens, the academy would need to publish a journal. Scottish-born geologist and academy member William Maclure (1763–1840), a generous donor of money as well as specimens and a large number of volumes for the library, championed the idea most strongly. He was so dedicated to public science education and cooperation that he bought the academy a printing press and housed it in his own home where the Journal of the Academy of Natural Sciences was published for the first few years. The Journal, and later the Proceedings, became important natural science journals.

A History of Expeditions

In 1812, a mere month after its founding, the academy sponsored its first “expedition” to visit the zinc mines in nearby Perkiomen, Pennsylvania. As it grew in size and prestige it organized, sponsored, and staffed more expeditions, often in collaboration with the federal government and other institutions. Army topographer Major Stephen Harriman Long (1784–1864) led one such expedition in 1819 to the Upper Mississippi Valley, which included academy members Thomas Say and Titian Peale (1799–1885), to study and collect the area’s flora and fauna.

By the mid-nineteenth century, the academy’s amateur naturalists gave way to a more professional membership, reflecting a larger trend in American science. The academy continued to collect specimens from around the world through trade, purchase, donation, and sponsorship of expeditions of exploration. In 1834, it cosponsored an expedition to the mouth of the Columbia River with the American Philosophical Society. In 1838 academy members Charles Pickering (1805–78) and Titian Peale, along with several corresponding members, joined the four-year Wilkes Expedition, which explored and surveyed the Pacific Ocean and adjacent land.

An engraving from a magazine depicting the Broad and Sansom location of the Academy of Natural Sciences.
In 1840, after decades of acquiring collections, the Academy of Natural Sciences moved to a new location at Broad and Sansom Streets, where it stayed until 1876. (The Academy of Natural Sciences of Drexel University Archives)

The academy’s collection grew quickly throughout the nineteenth century, forcing it to move five times to progressively larger buildings. In 1840 the institution moved to a new, fireproof building at Broad and Sansom Streets where it became one of the most modern, best-equipped natural history museums in the United States. It boasted, among other holdings, the world’s largest ornithological collection. The academy made its final move in 1876, constructing a new building at the corner of Race and Nineteenth Streets, a remote location that later became the heart of Philadelphia’s cultural district. The academy’s location was further enhanced by the creation of the Benjamin Franklin Parkway as the showpiece of the City Beautiful movement in 1917.

A Bent Toward Paleontology

Paleontological work preoccupied the academy during the late nineteenth century, thanks to men such as Joseph Leidy (1823–91) and Edward Drinker Cope (1840–97).  Leidy trained as a medical doctor, taught anatomy at the University of Pennsylvania and later Swarthmore College, and was a curator at the Academy of Natural Sciences from 1846 until his death. He described some of the first dinosaur fossils in America and led the field of vertebrate paleontology for most of the nineteenth century. Leidy did some collecting locally, but relied largely on field naturalists such as Cope and Ferdinand Hayden (1829–87) to send fossils from the American West.

Following early successes by men such as Leidy and Hayden, the field of paleontology exploded, and the academy was at its center, not always for the better. The most brilliant and controversial of these later scientists was Edward Drinker Cope. A student of Leidy’s, Cope was talented and ambitious, and after the Civil War he embarked on a number of expeditions of the American West that sent huge numbers of paleontological specimens back to the academy. Unfortunately, Cope maneuvered himself into a petty, and sometimes violent, feud over access to fossil excavation sites, interpretations of specimens, and prestige with fellow paleontologist O.C. Marsh (1831–99) of Yale University, a feud dubbed by many historians as the “Bone Wars.” This feud had important consequences for the academy and Joseph Leidy. Outlandish stories of the feud published in the popular press sullied the academy’s reputation, and Leidy, disgusted by Cope’s behavior and tired of being caught in the middle of the feud, eventually abandoned paleontology in the West and turned his attention to other projects and helping local organizations, including serving as the president of the faculty and head of the museum at the Wagner Free Institute of Science of Philadelphia.

Twentieth Century and Beyond

By the turn of the century, study of natural science began to shift away from museums to university biology labs. However, the academy continued to sponsor expeditions to the Arctic, Asia, Africa, and Central America and conduct original research in several fields. Years before ecology, pollution, and conservation became topics of public debate, in 1947 the academy embarked on a research agenda to study aquatic ecosystems through its Department of Limnology, and in 1948 it established an Environmental Research Division. Throughout the twentieth century, the academy conducted important research in ecology and biodiversity on its own and in partnership with other area institutions.

An image of the current location of the Academy of Natural Sciences at the corner of Race and Nineteenth Streets.
The Academy of Natural Sciences moved to its current location (seen here) at the corner of Race and Nineteenth Streets in 1876. (Visit Philadelphia)

In 2011 the academy became the Academy of Natural Sciences of Drexel University when it formed an official affiliation with Drexel University. This partnership created a bridge between university-based biological research and museum-based natural history collecting. The relationship combined the institutions’ educational missions and resources and enhanced their ability to collaborate on natural and environmental science research. The affiliation facilitated, among other projects, creation of a joint Department of Biodiversity, Earth, and Environmental Science (BEES) dedicated to research and education in the fields of environmental science, ecology and conservation, biodiversity and evolution, geoscience, and paleontology.

The mission and motto of this new department, “Field Experience, Early and Often,” echoed the interests and ambitions of the founders of the Academy of Natural Sciences. By remaining true to the vision of its founders, America’s oldest institution of natural history remained relevant into the twenty-first century.

Matthew A. White is a Ph.D. candidate in the History Department at the University of Florida. His dissertation, “Patronage, Public Science, and Free Education: William Wagner and The Wagner Free Institute of Science 1855–1929,” was supported by grants from the Consortium for the History of Science, Technology, and Medicine (Philadelphia). He is also a museum professional with over twenty-five years of experience in museums of science, technology, and history, and is the Director of Education at the Smithsonian Institution’s National Postal Museum. (Author information current at time of publication.)

Copyright 2016, Rutgers University


The Academy of Natural Sciences

Visit Philadelphia

The Academy of Natural Sciences moved to its current location (seen here) at the corner of Race and Nineteenth Streets in 1876. Although the study of natural sciences began to turn to university biology labs rather than museums during the twentieth century, the museum continued to sponsor scientific expeditions across the world. Years before pollution or conservation became issues of public debate, the academy embarked on research expeditions that explored these questions. In 2011 the museum announced an affiliation with Drexel University. The museum became known as the Academy of Natural Sciences of Drexel University, a relationship that combines the academy’s collections of natural history and university-based biological research. (Photograph by J. Fusco)

Dinosaurs at the Academy

Visit Philadelphia

In the late nineteenth century, the field of paleontology occupied most of the museum’s time and resources, spearheaded by the museum’s renowned paleontologists Joseph Leidy and Edward Drinker Cope. The field of paleontology grew dramatically through the efforts of Leidy, who collected paleontological specimens locally as Cope did the same in the West. The competition for specimens between Cope and O.C. Marsh, a paleontologist from Yale University, became so heated that historians dubbed the feud “Bone Wars.” (Photograph by J. Fusco)

Library Reading Room (1942)

The Academy of Natural Sciences of Drexel University Archives

Most visitors to the Academy of Natural Sciences are drawn by its engaging exhibits such as Dinosaur Hall. But for researchers, the academy's reading room, pictured here in 1942, is a major attraction.

The reading room is where the academy stores its published and unpublished print materials, reflecting its findings during expeditions throughout the nineteenth and twentieth centuries and recorded in the Journal of the Academy of Natural Sciences.

Bolivar the Elephant (c. 1908)

The Academy of Natural Sciences of Drexel University Archives

Alongside its goal of scientific discovery, the museum also seeks to spread the knowledge. One way the museum accomplishes that is through its museum exhibits. Since its founding in 1812, the museum has sought to present the public with specimens from the world’s diverse ecosystems, current and historical. One specimen was Bolivar the Elephant. The Philadelphia Zoo, where Bolivar lived until his death in 1908, donated him to the academy so that his skeleton and other prepared remains could be put on display.

The Academy of Natural Sciences c. 1840

The Academy of Natural Sciences of Drexel University Archives

The founders of the Academy of Natural Sciences felt that they had been excluded and poorly represented by the elite institutions of early nineteenth-century Philadelphia, such as the displays of naturalist Charles Willson Peale. In 1812 the museum acquired its first collection, a large selection of minerals purchased from local congressman Adam Seybert. The museum continued to expand and by the late 1830s it needed to move to a new location to accommodate its holdings. In 1840, it did, moving to a new location at the corner of Broad and Sansom Streets. It stayed there until 1876, when it moved to its current location at the corner of Race and Nineteenth Streets.

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Related Reading

Conn, Steven. Museums and American Intellectual Life, 1876–1926. Chicago: The University of Chicago Press, 1998.

Jaffe, Mark. The Gilded Dinosaur: The Fossil War Between E. D. Cope and O. C. Marsh and the Rise of American Science. 1st ed. New York: Crown, 2000.

Orosz, Joel J. Curators and Culture: The Museum Movement in America, 1740–1870. Tuscaloosa: University of Alabama Press, 1990.

Peck, Robert McCracken, Patricia Tyson Stroud, and Rosamond Wolff Purcell. A Glorious Enterprise: The Academy of Natural Sciences of Philadelphia and the Making of American Science. Philadelphia: University of Pennsylvania Press, 2012.

Philbrick, Nathaniel. Sea of Glory: America’s Voyage of Discovery: The U.S. Exploring Expedition, 1838–1842. New York: Viking, 2003.

Porter, Charlotte M. The Eagle’s Nest: Natural History and American Ideas, 1812–1842. University, AL: University of Alabama Press, 1986.

Stroud, Patricia Tyson. Thomas Say: New World Naturalist. Philadelphia: University of Pennsylvania Press, 1992.

Warren, Leonard. Joseph Leidy: The Last Man Who Knew Everything. New Haven: Yale University Press, 1998.

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