In accordance with my plan, I have in no instance considered myself a scientific instructor. I have said that the perusal of this book might be beneficial to military students, but I have not contemplated that all young men of that class were to become only engineers. It is the part of the engineer to carry on his operations in accordance with the rules he has been taught; but it is the higher duty of the CAPTAIN to be alive to the CHANCES of the siege, as well as observant of its scientific progress. It has been my business to relate the events, and, to a commander of genius, these are as rich in instruction as the mere school-rules of his awful art. W. R. LIST OF SIEGES. _Page_ Abydos 215 Acre, St. Jean de 399 Agrigentum 157 Aï 5 Alexandria 262 Algiers 463 Antioch 317 Antwerp 490, 595 Argos 188 Arras 511 Athens 131 Azoth 87 Babylon 116 Bactra 4 Badajos 569 Bagdad 422 Barcelona 534 Beauvais 447 Belgrade 434 Bergen-op-Zoom 502 Bommel 532 Burgos, Castle of 578 Byblos 130 Byzantium 159 Cahors 479 Carthagena 208 Carthage 223 Cassel 423 Cassovia 432 Castillon 444 Ciudad Rodrigo 575 Constantinople 572 Corinth 192 Corioli 123 Cremona 218 Damascus 397 Dover 421 Edessa 365 Falerii 126 Frederikshall 521 Gaza 184 Gibraltar 536 Grenada 449 Ismaïl 525 Jerusalem 12 Kaibar 371 Lacedæmon 187 Leyden 475 Liége 445 Lisbon 397 Livron 478 Lyons 169 Mæestricht 482 Magdeburg 505 Malta 498 Marseilles 259 Messina 189 Milan 287 Naples 357 Nineveh 85 Orleans 297 Ostend 501 Palmyra 278 Paris 237 Pavia 309 Persepolis 185 Platææ 127