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Illustrations 1. Alexander of Macedon holding a rocket, from Conrad Kyeser’s Bellifortis 107 2. A giant tank invented by Alexander of Macedon, from Conrad Kyeser’s Bellifortis 108 3. Portrait of Conrad Kyeser, from his Bellifortis 109 4. Parts of a fountain and view of an assembled fountain, from Giovanni Fontana’s Bellicorum instrumentorum liber 112 5. Saint Dorothy recommending Mariano Taccola, from Taccola’s De ingeneis 114 6. Man in fish submarine, from Mariano Taccola’s De ingeneis 116 7. Loading a cannon barrel and discharging a cannon, from Cod. germ. 600, Bayerische Staatsbibliothek, Munich 118 8. Cannons mounted with elevated arches used for aiming and a double-barreled cannon, from HS 25,801, Germanisches Nationalmuseum, Nuremberg 121 9. Epicycloid gears, from Leonardo da Vinci’s Madrid Codex I 139 10. Silver refiners, from the Schwazer Bergbuch 183 11. Miners smelting ore, from Georgius Agricola’s De re metallica 187 12. Bastion fort, from Giacomo Lanteri’s Duo libri . . . del modo di fare le fortificationi 207 13. Portrait of Mathes Roriczer by Hans Holbein the Elder 214 14. Albrecht Dürer, self-portrait, 1500 219 15. Cesare Cesariano’s allegory of his own life, from his Vitruvian commentary of 1521 225 This page intentionally left blank ...

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