Note 26 — PREFATORY NOTE.

Osiander, in a letter to Copernicus, dated April 20, 1541, had endeavored to reconcile him to such a procedure, and ends by saying, "Sic enim placidiores reddideris peripatheticos et theologos quos contradicturos metuis." See Apologia Tychonis in Kepleri Opera Omnia, Frisch's edition, vol. i., p. 246. Kepler holds Osiander entirely responsible for this preface. Bertrand, in his Fondateurs de l'Astronomie Moderne, gives its text, and thinks it possible that Copernicus may have yielded "in pure condescension toward his disciple." But this idea is utterly at variance with expressions in Copernicus's own dedicatory letter to the pope, which follows the preface. For a good summary of the argument, see Figuier, Savants de la Renaissance, pp. 378, 379. See, also, citation from Gassendi's life of Copernicus, in Flammarion, Vie de Copernic, p. 124. Mr. John Fiske, accurate as he usually is, in his recent Outlines of Cosmic Philosophy, appears to have followed Laplace, Delambre, and Petit into the error of supposing that Copernicus, and not Osiander, is responsible for the preface.