Pliny the ElderNaturalis HistoriaNatural HistoryAncient RomeRoman science

Pliny the Elder's Naturalis Historia: The Ancient World's First Encyclopedia

Pliny the Elder's Naturalis Historia: The Ancient World's First Encyclopedia Written between AD 77 and 79 in Ancient Rome, the Naturalis Historia (Natural History) stands as one of the mo...

Pliny the Elder's Naturalis Historia: The Ancient World's First Encyclopedia

Written between AD 77 and 79 in Ancient Rome, the Naturalis Historia (Natural History) stands as one of the most ambitious intellectual undertakings of antiquity. Authored by Pliny the Elder, this massive work served as a comprehensive encyclopedia of the known world, blending popular science, ethnography, and art history into a single, monumental record of human knowledge.

Pliny's goal was to catalog the entirety of nature and human achievement. In his preface, he claims to have compiled 20,000 facts sourced from approximately 2,000 books and 100 select authors. Modern analysis of his authorities reveals a network of over 400 sources, including 327 Greek and 146 Roman contributors.

Copy of Naturalis Historia printed by Johannes Alvisius in 1499 in Venice, Italy
Copy of Naturalis Historia printed by Johannes Alvisius in 1499 in Venice, Italy

Key Facts

A cynocephalus, or dog-head, as described by Pliny in his Natural History. From the Nuremberg Chronicle (1493).
A cynocephalus, or dog-head, as described by Pliny in his Natural History. From the Nuremberg Chronicle (1493).
  • Author: Pliny the Elder, writing in Latin during the 1st century AD.
  • Scope: Covers astronomy, geography, zoology, botany, pharmacology, mineralogy, and art.
  • Scale: Contains 37 books based on thousands of external sources.
  • Legacy: Heavily influenced medieval intellectual life and early scientific thought.
  • Preservation: Survived through approximately 307 medieval manuscripts.

Structure and Content

A sciapod, described by Pliny in his Natural History, from the Nuremberg Chronicle (1493)
A sciapod, described by Pliny in his Natural History, from the Nuremberg Chronicle (1493)

The Naturalis Historia is organized logically, moving from the celestial heavens down to the depths of the earth. The work is divided into several thematic volumes:

Thematic Organization of Naturalis Historia
Volume Books Primary Subjects
I 1–2 Preface, Astronomy, and Meteorology
II 3–7 Geography, Ethnography, Anthropology, and Human Physiology
III 8–11 Zoology (Mammals, Birds, Insects, and Marine Life)
IV–VII 12–27 Botany, Agriculture, Horticulture, and Medicine
VIII 28–32 Pharmacology, Magic, and Aquatic Life
IX–X 33–37 Mineralogy, Metallurgy, and Art History

The Natural World and Medicine

Pliny's botanical and medical sections are particularly extensive. In Books XX through XXIX, he discusses medicine and plants used for drugs, listing over 900 different remedies. This exceeded the catalogs of other famous ancient authorities like Dioscorides (600 drugs), Galen (650), and Theophrastus (550). He notably documented the effects of opium, noting its ability to induce sleep and its potential to be fatal.

Art and Mineralogy

The final books of the encyclopedia transition into the study of minerals and the arts. Pliny provides detailed accounts of sculpture and painting, often citing Greek epigrams and authorities such as Varro. He famously praised the marble statue Laocoön and His Sons, attributing it to the Rhodian sculptors Agesander, Athenodoros, and Polydorus.

Laocoön and His Sons
Laocoön and His Sons

His interest in mineralogy extended to the practical application of mining. He described the Ruina montium technique, a sophisticated Roman mining method used to extract gold, most notably at the site of Las Médulas.

The striking landscape of Las Médulas, the most important gold mine in the Roman Empire, resulted from the Ruina montium mining technique.
The striking landscape of Las Médulas, the most important gold mine in the Roman Empire, resulted from the Ruina montium mining technique.

Manuscript Tradition and Publication

How Hipparchus found the distances to Sun and Moon
How Hipparchus found the distances to Sun and Moon

The transmission of the Naturalis Historia through the centuries is a complex journey of copying and preservation. There are roughly 307 extant medieval manuscripts. These are generally categorized into Vetustiores (older manuscripts from the 8th and 9th centuries) and Recentiores (later prototypes).

Incomplete stemma codicum for prototype manuscripts of the Naturalis Historia.
Incomplete stemma codicum for prototype manuscripts of the Naturalis Historia.

Early copies include Uncial codices (a majuscule script used in early Greek and Latin manuscripts) from the 5th and 6th centuries, some of which became palimpsests—parchments that were scraped clean and reused for other texts.

8th century (first half) Insular Uncial codex of the Naturalis Historia, beginning of Book 4, in ms. Leiden Voss. Lat. F. 4, fol. 2
8th century (first half) Insular Uncial codex of the Naturalis Historia, beginning of Book 4, in ms. Leiden Voss. Lat. F. 4, fol. 2

The work eventually entered the era of print with the editio princeps (first printed edition) in 1469 in Venice, printed by Johann of Speyer.

The Natural History of Pliny in a mid-12th-century manuscript from the Abbey of Saint-Vincent [fr], Le Mans, France
The Natural History of Pliny in a mid-12th-century manuscript from the Abbey of Saint-Vincent [fr], Le Mans, France

Historical Reception and Criticism

A collection of Roman amber from the Archeological Museum of Aquileia
A collection of Roman amber from the Archeological Museum of Aquileia

During the Middle Ages, Pliny's influence was immense. Isidore of Seville's Etymologiae relied heavily on Pliny, which in turn influenced Vincent of Beauvais's Speculum Maius. However, this reliance on book-based knowledge over direct observation has led some historians to argue that Pliny's work may have slowed the progress of Western science by encouraging the repetition of errors.

By the early modern period, critics began to challenge his methodology. In 1509, Niccolò Leoniceno published De Erroribus Plinii (On Pliny's Errors), arguing that Pliny lacked a proper scientific method and sufficient knowledge of philosophy and medicine. Similarly, Sir Thomas Browne expressed skepticism regarding Pliny's dependability in his 1646 work Pseudodoxia Epidemica.

Frequently Asked Questions

Detail of a relief depicting a Gallo-Roman harvesting machine
Detail of a relief depicting a Gallo-Roman harvesting machine
Roman coins were struck, not cast, so these coin moulds were created for forgery.
Roman coins were struck, not cast, so these coin moulds were created for forgery.
Amethyst intaglio (1st century AD) depicting Nero as Apollo playing the lyre (Cabinet des Médailles)
Amethyst intaglio (1st century AD) depicting Nero as Apollo playing the lyre (Cabinet des Médailles)
Historia naturalis translated into Italian by Cristoforo Landino, 1489 edition
Historia naturalis translated into Italian by Cristoforo Landino, 1489 edition

How many sources did Pliny the Elder use?

Pliny claimed to have used 2,000 books and 100 select authors. Extant lists of his authorities identify more than 400 sources, consisting of 327 Greek and 146 Roman writers.

What is the significance of the Laocoön and His Sons statue in the text?

Pliny regarded this marble statue as superior to all other pictures and bronzes in the world, attributing its creation to three sculptors from the island of Rhodes: Agesander, Athenodoros, and Polydorus.

How did Pliny's work influence the Middle Ages?

Pliny's work was a primary source for medieval encyclopedists like Isidore of Seville and Vincent of Beauvais, shaping the intellectual landscape of the era through its comprehensive (though sometimes unverified) collection of facts.

What was the 'Ruina montium' mentioned in the text?

Ruina montium was a Roman mining technique used for gold extraction, which caused significant landscape changes, as seen today at the site of Las Médulas.

Which modern editions are available for study?

The work is covered in its entirety by the Teubner, Loeb Classical Library, and Collection Budé editorial series, providing Latin texts alongside English or French translations.

References

  1. Cf. Pliny's consideration of Aristotle, as well as modern criticism of Pliny's work, in Trevor Murphy, Pliny the Elder's Natural History: The Empire in the Encyclopedia, OUP (2004), pp. 1–27, 194–215.
  2. Compare structure at LacusCurtius, with footnotes.
  3. Posidonius's figure was accurate: the distance to the Moon varies between 221,500 miles at perigee to 252,700 miles at apogee.
  4. Extant mills found at Barbegal in southern France use water supplied by the aqueduct supplying Arles, powering at least sixteen overshot water wheels arranged in two parallel sets of eight down the hillside. It is thought that the wheels were overshot water wheels with the outflow from the top driving the next one down in the set, and so on to the base of the hill. Vertical water mills were known to the Romans, being described by Vitruvius in his De Architectura of 25 BC.
  5. John Gerard's influential Herball (1597) called scolecium "Maggot berrie" and supposed "Cutchonele" (Cochineal) to be a form of this. Many later authors have copied Gerard in this error.[98]