De proprietatibus rerum. Cologne: Printer of the 'Flores Sancti Augustini' (Johann Schilling), for William Caxton, 1471.
A condensed encyclopedia of what was then understood by natural science. The work was probably written about the middle of the 13th century. It was one of the most widely read scientific works of the Middle Ages. Caxton is said to have learned to print from this book. ISTC No. ib00131000. Digital facsimile from Heinrich Heine Universität Dusseldorf at this link.
Subjects: COUNTRIES, CONTINENTS AND REGIONS, COUNTRIES, CONTINENTS AND REGIONS › England (United Kingdom), Encyclopedias, MEDIEVAL MEDICINE , MEDIEVAL MEDICINE › England