The Lycée Louis-le-Grand, Rue St-Jacques, on the site of four colleges of bygone ages, dates in its foundation from 1550, rebuilt 1814-20, restored 1861-85. In the court we see some of the ancient walls. It has borne different names characteristic of the different periods of the history of France. It began as the Collège de Clermont, from its founder, the bishop; in 1682 it took the name of the King, Louis-le-Grand. In 1792 it became Collège de l’Égalité; in 1800, Le Pyrtanée; Lycée Imperial in 1802; Collège Royal-Louis-le-Grand in 1814; Lycée Descartes in 1848, to revert to its present designation in 1849. Many of the most eminent men of the eighteenth and nineteenth centuries were pupils there. The Collège Ste-Barbe built in the sixteenth century was added to Louis-le-Grand in 1764. Its tower goes by the name Tour Calvin, for this was the Huguenot quarter. Here many of the persecuted Protestants were in hiding at the Massacre of St. Bartholomew. Yet it was at Ste-Barbe that Ignatius Loyola was educated. Close around Lycée Louis-le-Grand and the Collège de France, we find a number of twelfth-and thirteenth-century streets condemned to demolition, some of their houses already razed, those that remain showing many interesting relics. Rue du Cimetière-St-Benoît, which bordered the cemetery erewhile there; Rue Fromantel, the name a corruption of _froid mantel_, or _manteau_, with its interesting old-world dwellings; Impasse Chartrière, where at No. 2 we see an old sign and a niche of the time of Henri IV, who was wont to visit his “belle Gabrielle” here. No. 11 was, it is said, the entrance to the King’s stables. At the junction of Rue Lanneau four streets form the quadrangle where was erewhile the well “Certain,” so named after the vicar of the old church St-Hilaire, once close by, discovered beneath the roadway in 1894. Roman remains of great interest were found at that time below the surface of all these streets. Rue Valette, eleventh century, was once Rue des Sept Voies, for seven thoroughfares met there. At No. 2, in the billiard-room of the old inn, we find vestiges of the church St-Hilaire, once there. No. 19 dates from the fourteenth century, and in the seventeenth century was a meeting-place of the Huguenots who hid in its Gothic two-storied cellars. In Rue Laplace lived Jean de Meung, author of _Le Roman de la Rose_. At No. 12 we see the entrance of a vanished college, next door to which was the Collège des Écossais. L’École Polytechnique stands on the site of the college founded in 1304 by Jeanne de Navarre, wife of Philippe le Bel, for seventy poor scholars. It was rebuilt in the fifteenth century. The last vestiges of that rebuilding, a beautiful Gothic chapel, were swept away in 1875. Traces of a Roman cemetery were found in 1906. The present structure dates from the eighteenth century, the work of Gabriel. The house of the Général-Commandant is the ancient Collège de Boncourt, founded in 1357.