Note 54 — Chapter III · Pliny’s Natural History
Reading edition
“Viginti milia rerum dignarum cura ... ex lectione voluminum circiter duum milium, quorum pauca admodum studiosi attingunt propter secretum materiæ, ex exquisitis auctoribus centum inclusimus xxxvi voluminibus, adiectis rebus plurimis quas aut ignoraverant priores aut postea invenerat vita.” Also from the dedication. Pliny uses more than one hundred writers, however.