Unpublished paper, 'Alteram mathematicae divisionem attulii Genum' by [Barnabé Brisson] Written primarily in French. The author describes a new type of mathematical division focused on the trisection of angles, including proofs, focussing on the application of this geometry to longitudinal calculations. Several pages contain a stylised, illegible signature. A marginal note on the first page reads 'Problème résolu de la trisection des angles par le vaisseau Le Brisson de la Compagnie des Indes' [The problem of the trisection of angles solved by the ship le Brisson from the Compagne des Indes]. Six manuscript pages including some figures in the text. Subject: Mathematics [late 18th century]