Leibniz - Bernoulli correspondence

This is from a letter of June, 1695 in which Leibniz is discussing differentiation with Johann Bernoulli. The work in which these letters appear is the Virorum Celeberr. Got. Gul. Leibnitii et Johann Bernoulli Commercium Philosophicum et Mathematica, originally published in 1740.

From the Rare Book and Manuscript Collection at Columbia University.

Part of the Mathematical Treasures section of Loci: Convergence.