As the eighteenth century progressed, commercial prosperity returned with extraordinary rapidity, and the town shows every sign of making an intelligent use of its opportunities. A mission is sent to Smyrna and Adrianople to learn the textile methods of the East; dyers in the Rue Eau de Robec are busier than ever; the Quartier Cauchoise is set apart for industrial work, for silk and wools and linens; there is a great storehouse for grain, a huge "Halle des Toiles"; a Bourse for business men. In 1723 a new "Romaine," or Custom-House, was built, which involved the destruction of the Porte Haranguerie and the Porte de la Viconte, and upon its triangular pediment was placed Coustou's beautiful carving of "Commerce," of which I reproduce a drawing in these pages. After the Revolution the "Tribunal des Douanes" was held in the Maison Bourgtheroulde, until in 1838 the present "Douane" was built by Isabelle, and Coustou's relief was set beneath its rotunda inside. The various fortunes of the Custom-House of Rouen have been described by M. Georges Dubosc, another of those patriotic antiquarian writers, in whom Rouen is richer than any provincial town I know. His large volume on the architecture of the seventeenth and eighteenth centuries gives so complete and accurate a list that I am fortunately relieved from any discussion of a period with which I must confess an uninstructed want of sympathy. But I owe it to his insight that the beautiful courtyard (illustrated in this chapter) in the Rue Petit Salut (now No. 13 Rue Ampere) was not put down as sixteenth century in my notes, a date to which I was inclined by the fine open staircase and doorway on the right of the courtyard. On its left is an undoubted Renaissance pillar, probably taken from its original position in another place, and high above you rises a gabled window with carved sides. The only historical event I have been tempted to connect with this spot is the entry of Louis d'Orleans in 1452, who is said to have lodged in the "Hotel d'Estellan, Rue Petit Salut." But the house is worth visiting if only to speculate on the dungeon windows in the corner of the little street outside, and to look up the Impasse Petit Salut a little further on, where the Tour de Beurre rises with an extraordinary effect of solitary beauty above the twisted roof trees into the sky.