"The common cemetery of Paris, hard by the Church of the Holy Innocents, opposite the street of St.Denis, had remained up to that time open to all passers, man and beast, without anything to prevent it from being confounded with the most profane spot; and the king, hurt at such indecency, had it enclosed by high stone walls, with as many gates as were judged necessary, which were closed every night." At the same time he had built, in this same quarter, the first great municipal market-places, enclosed, likewise, by a wall, with gates shut at night, and surmounted by a sort of covered gallery.

He was not quite a stranger to a certain instinct, neither systematic nor of general application, but practical and effective on occasion, in favor of the freedom of industry and commerce.

Before his time, the ovens employed by the baking trade in Paris were a monopoly for the profit of certain religious or laic establishments; but when Philip Augustus ordered the walling in of the new and much larger area of the city "he did not think it right to render its new inhabitants subject to these old liabilities, and he permitted all the bakers to have ovens wherein to bake their bread, either for themselves, or for all individuals who might wish to make use of them." Nor were churches and hospitals a whit less than the material interests of the people an object of solicitude to him.
His reign saw the completion, and, it might almost be said, the construction of _Notre-Dame de Paris,_ the frontage of which, in particular, was the work of this epoch.

At the same time the king had the palace of the Louvre repaired and enlarged; and he added to it that strong tower in which he kept in captivity for more than twelve years Ferrand, Count of Flanders, taken prisoner at the battle of Bouvines.

It would be a failure of justice and truth not to add to these proofs of manifold and indefatigable activity on the part of Philip Augustus the constant interest he testified in letters, science, study, the University of Paris, and its masters and pupils.