What then do we know of the very first works Mancinelli
composed? What were the Regulae constructionis and Summa
declinationis of the mid-1470's, which Mancinelli described as
distinct works in his 1477 preface? The first surviving edition
of the Regulae is that of 1490, which included the material from
the 1477 Regimen. It was printed in such a way as to imply that
Regulae and Summa were conceived together and indeed they are
treated as a single work in Mancinelli's 1493 autobiography. In
1490, one preface addressed to Battista Gorio (quoted in section
3.01)) stands before the two works, which are also linked on the
title page. In effect we have lost the first version of these
works entirely, the one that Mancinelli tested in manuscript
form in his Velletri classroom and sent to print in Rome about
1475. The content of the two treatises probably was roughly
similar to that of the later, expanded versions. They treat,
respectively, verb and noun inflectional paradigms. The
originals may have been somewhat sho