Oratio NigroniJoannes Nigronus.  Oratio Nigroni iureconsulti habita Genue du[m] Pa[n]thaleone[m] Siluaticu[m] vtriusq[ue] iuris ornaret insignibus.[Pavia]: Impressussum Papie p[ro] magistru[m] Jacob de Burgofrancho, 1509.

The first and only edition of the legal dissertation given by the Genoese jurist Giovanni Negroni in Genoa in July, 1507.

Eight unnumbered leaves, a fresh copy bound in later limp vellum.  Title page bears the device of Jacobus de Burgofranco.  The work is extensively annotated in a contemporary hand.

The Oratio was given to celebrate Pantaleone Silvanicus being awarded his doctorate, likely from Studium Bononiensis (University of Bologna), the first European university and central to the development of Roman law.  It has been suggested that Pantaleone Silvanicus may be Pantaleone Giustiniani, a distinguished Hebraist, canonist, and contemporary of Erasmus.  The Oratio, in which Negroni commends Pantaleone for his superior knowledge of both Roman and canon law,comprises a historical survey of civil and public law. Emphasizing Roman law, Negroni also provides a detailed analysis of the relationship between the people and institutions under both republican and imperial governments, and in this brief work manages to summarize a long span of legal history.

One other copy of the Oratio is recorded in the United States, at the Library of Congress.

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