In 1962-1967 Professor L.M. de Rijk published his Logica Modernorum - A Contribution to the History of Early Terminist Logic. The first part (1962) has the title: On the Twelfth Century Theories of Fallacy. The second part (two volumes, 1967) has as title: The Origin and the Early Development of the Theory of Supposition. De Rijk's Logica Modernorum provides the basis for the modern study of medieval theories of supposition. Now, nearly 50 years later, scholars have made great progress in the study of the properties of terms. De Rijk's study was primarily about the...