[206] Amoretti, Memorie storiche sulla vita e gli studi di Leonardo da Vinci, Milan, 1874.
[207] W. Irving, Columbus, vol. i. p. 819; Roselly de Lorque, Vie de Colomb., 1857.
[208] According to Secchi (Soleil, 1875) Scheiner preceded Galileo, and was himself preceded by Fabricio, though the discovery of this last was not known until a later date.
[209] Galilei, Opere, vol. i. p. 69.
[210] Arago, Œuvres, 1851.
[211] Hœfer, op. cit.
[212] Herschel, Outlines of Astronomy, 1874.
[213] Arago, Notices Biographiques, 1855.
[214] Atti, Della Vita di Malpighi, 1774.
[215] Hœfer, Histoire de la Chimie, 1869.