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HERMANN, JACOB. Phoronomia; sive, De viribus et motibus corporum solidorum et fluidorum. 12 folding engraved plates. [22], 401, [2] pages, including engraved allegorical frontispiece. 4to, 239x197 mm, modern tan leatherette; spotting throughout, occasional browning, dampstain in upper outer corner of last few plates. Contemporary signature of Fr. Justinianus Klug. Amsterdam: apud Rod. & Gerh. Wetstenios, 1716
first edition. "An early contribution to the calculus of variations. The author was professor at Padua and Leningrad and took part on Leibnitz's side in the question of 'vis viva.' There is a description of Hermann's thermometer, which was an improvement on Amonton's air thermometer and not affected by atmospheric pressure"--Babson supplement, page 88. Middleton, page 108.
