Unpublished manuscript, on a new discovery of a natural geometry by unknown author The author discusses his new type of simple and natural geometry reduced to five rules, which he believes improves on the work of Archimedes and Euclid. An ink note verso of final page reads 'Papers under the feigned signature of [Simon] Couder le Pretre concerning a new discovery of a simple and natural geometry.' Emendations appear throughout in ink. Subject: Mathematics Received by the Rociety on 8 March 1779. [1779]