Leonardo da Vinci, Pathfinder of Science
Francis I, 143-145, 148-157   Fraternity of the Immaculate Conception, 43, 44, 47   Friction, 140, 141                                       G   Galen, 52, 53   Galileo, Galilei, 134, 141, 160   Genoa, 143   Geocentric theory, _see_