Some considerations of Mr. Nic. Mercator, concerning the geometrick and direct method of signior Cassini for finding the apogees, excentricities, and anomalies of the planets; as that was printed in the Journal des Scavans of Septemb. 2. 1669: which considerations are here delivered in a Latine tongue, wherein they were written by the author, as chiefly regarding the learn'd in astronomy, viz