| Sumario: | This paper looks into the contents of the Tractatus suppositionum terminorum by Mas-ter Franquera, in the context of the teaching of logic in Salamanca (and elsewhere in Spain) in the fifteenth century. Franquera's work is characterised by its explicit realist bias and its rejection of Ockhamist theses, i.e., by its recognition of the existence of a natura communis or a universale in re, which is evident in all discussions related to sup-positio simplex and the theory of signijicatio. But, apart from this, Franquera's discus-sion of the theory of suppositio stands out as a strange mixture of different doctrines: some of them are derived from thirteenth-century (or earlier) analyses, others from fourteenth-century developments; realist goals are reached by means of instruments that, while not being nominalist, are definitely inspired by terminism. While upholding the theses of realist schools, Franquera adopts the definitions and rules of nominalist authors.
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