Bartholomaeus Anglicus

Bartholomeus Anglicus (English: Bartholomew the Englishman) (before 1203 – 1272) was an early 13th-century scholastic scholar of Paris, a member of the Franciscan order. He was the author of the compendium De proprietatibus rerum ("On the Properties of Things"), dated at 1240, an early forerunner of the encyclopedia and one of the most popular books in medieval times. Bartholomew also held senior positions within the church and was appointed Bishop of Łuków although he was not consecrated to that position.

Little is known of Bartholomew's early life. He is believed to have been born around the turn of the 13th century to unknown parents. The first record of him was in 1224 in Paris as a teacher, although he is also believed to have studied at Oxford University.

The work De proprietatibus rerum was written at the school of Magdeburg in Saxonia and intended for the use of students and the general public. Bartholomew carefully notes the sources for the material included, although, at present, it is sometimes impossible to identify or locate some of them. His annotations give a good idea of the wide variety of works available to a medieval scholar.

The original Latin work was translated into French in 1372 and a number of manuscripts of the Latin and French versions survive. The work was later printed in numerous editions. John Trevisa produced an English translation in 1397. Extracts were compiled by Robert Steele under the title Medieval Lore: an Epitome (1893). A critical edition of Trevisa's translation appeared in 1988.

The work was organized in 19 books. The subjects of the books, in order, are God, angels (including demons), the human mind or soul, physiology, of ages (family and domestic life), medicine, the universe and celestial bodies, time, form and matter (elements), air and its forms, water and its forms, earth and its forms including geography, gems, minerals and metals, animals, and color, odor, taste and liquids.

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