with houses, gardens, palaces, and the shops of the artisans, who were ruled by its twelve great craft gilds. Parallel with the main street was the chief canal, beside which stood the stone warehouses of the merchants who traded with India. Twelve thousand stone bridges spanned its waterways, and those over the principal canals were high enough to allow ships with their tapering masts to pass below, while the carts and horses passed overhead. In
