Pisa's commercial greatness and prosperity, 339. — Her decline at the end of the thirteenth century, 340. — Industrial organization in the early fourteenth century, 341. — Its mature form, 341. — The gilds, 341. — The unorganized crafts, 347. — The crafts, organized but dependent, 348. — Industrial regulation by the gilds, 349. — By the city, 350. — Study of the woolen industry, 353. — The Curia Mercatorum, 354. — The Arte della Lane, 355. — The domestic system in the shell of the old gild organization, 356. — Conclusion, 358.