Marcus Terentius Varro, 116–28 B.C. _Antiquitatum Rerum Humanarum et Divinarum Libri XLI._ _Rerum Humanarum Libri XXV._ Bk. 1. Introduction. 2–7. de hominibus. 8–13. de locis (8, Rome; 11, Italy; 12, remaining Europe; 13, Asia and Africa). 14–19. de temporibus (14, introduction; 15, de saeculis; 16, de lustris; 17, de annis; 18, de mensibus; 19, de diebus). 20–25. de rebus. _Rerum Divinarum Libri XVI._ Bk. 26. Introduction. 27–29. de hominibus. 30–32. de locis. 33–35. de temporibus. 36–38. de rebus. 38–41. de diis. This encyclopedia stands for the interests of the scholarly antiquarian rather than for those of the man interested in natural science. The work itself is lost, but the nature of its contents is fairly well known, thanks to St. Augustine. For further information regarding Varro’s encyclopedic works, see Boissier, _Étude sur la vie et les ouvrages de M. Varron_, Paris, 1861; and _Geschichte der Römischen Literatur_, Martin Schanz, München, 1909, Erster Teil, Zweite Hälfte, 187, 188. Verrius Flaccus (flourished under Augustus). _De Verborum Significatu._ The work itself has been lost, as also the greater part of the abbreviation of it to twenty books made by Pompeius Festus before 200 A.D. Festus’s abridgement was further abridged by Paulus Diaconus in Charlemagne’s time. It is regarded as certain that material in Isidore’s _Etymologies_ came directly or indirectly from the _De Verborum Significatu_. Nettleship, _Lectures and Essays_, Oxford, 1885. Pliny the Elder (23–79 A.D.). _Naturalis Historiae Libri XXXVII._ Bk. 1. Contents and lists of sources. 2. Description of the universe. 3–6. Geography. 7. Man. 8. Animals. 9. Fishes. 10. Birds. 11. Insects. 12–27. Trees, shrubs, plants, including medicinal botany. 27–32. Medicinal zoölogy. 32–37. Metals, colors, stones, and gems, especially from the artist’s point of view. Dressel, _De Isidori Originum Fontibus_, pp. 243–247, in _Rivista di filologia_, 1874–75, gives an incomplete list of Isidore’s borrowings from Pliny. He points out Isidore’s carelessness in borrowing in one case where he shows that what Pliny tells us of the _echineis_, Isidore hastily assigns to the _mullus_. _Cf._ Isidore 12, 6, 25, with Pliny, 32; 8, 9, 70, 138–39. Suetonius Tranquillus (last of first century and first half of second). _Prata._