THERE is a Wall which encompasses Paris, of about twelve feet high and two feet thick, about nine miles long on the North side, and five on the South side; this was built just before the Revolution, and was intended to prevent goods from being smuggled into Paris. On the North side are thirty-six barriers, and on the other side eighteen; of these fifty-four I saw only ten. They were intended for the officers of the customs; at present they are used as guardrooms. Most of them are magnificent buildings, of white stone, some like temples, others like chapels; several of these are described in the new _Paris Guides_; but views of none of them have as yet been engraven.[4] [Note 4: The _Rotunda D'Orleans_, in this wall, at the back of the gardens of the _ci-devant_ Duke of that name is worthy of observation.] A bridge of white stone was just finished and opened for the passage of carriages; it was begun in 1787, it is of five arches, the centre arch is ninety-six feet wide, the two collateral ones eighty-seven feet each, and other two seventy-eight, each of these arches forms part of a circle, whose centre is considerably under the level of the water; it is thrown over the river from the _Place de Louis XV._ to the _Palais Bourbon_. The _Champ de la Federation_, formerly _Champ de Mars_, is a field which served for the exercises of the pupils of the Royal Military School; it is a regular parallelogram of nine hundred yards long, and three hundred yards broad, exclusive of the ditches by which it is bounded, and of the quadruple rows of trees on each side; but if these are included the breadth is doubled. At one extremity is the magnificent building above-mentioned,[5] and the river runs at the foot of the others. In this field is formed the largest _Circus_ in the world, being eight hundred yards long and four hundred broad; it is bordered by a slope of forty yards broad, and of which the highest part is ten feet above the level ground; the lower part is cut into thirty rows, gradually elevated above each other, and on these rows or ridges a hundred and sixty thousand persons may fit commodiously; the upper part may contain about a hundred and fifty thousand persons standing, of which every one may see equally well what is doing in the _Circus_. The National confederation was first held here, 14th July, 1790, and at that time a wooden bridge was thrown on boats over the river for convenience. [Note 5: In 1788 the school was suppressed, the scholars were placed in the army, or in country colleges, and the building is intended, when the necessary alterations are completed, to be one of the four hospitals which are to replace that of the _Hotel-Dieu_. This hospital is in such a bad situation, being in the midst of Paris, that a quarter of the patients die. It contains only two thousand beds; each of the four new hospitals is to contain twelve hundred beds.]