Austria lives on the Boulevard (I think des Italiens). The Emperor of Russia and King of Prussia I know not where; but the Hetman Platoff (as well as our Colonel Sir A. Fraser) lives at the Hotel du Nord, Rue de Richelieu, where his guard of wild-looking Cossacks, with their little shabby horses picketed in the court, furnish gape-seed for the _badauds_, a crowd of whom are continually at the gate. It is a singular spectacle to see the public places in town all doubly guarded--a French and an English or Prussian sentry. When I ride into Paris by the Barrière de Clichy, as I generally do (that way being so much pleasanter than passing through La Chapelle and Faubourg St Denis), I am at once amused and interested at seeing the two sentries soberly pacing backward and forward, opposite each other, one on each side of the street. As I draw near they simultaneously front and pay the usual compliment (there is something piquant in receiving a salute from a French soldier), each after his own fashion. There they stand; on the one side a tall handsome fellow, with a fair face and prim shopkeeper-like air, with his high fur cap and trim uniform, almost speck and span new; the other, a shorter but more sturdy figure, bronzed visage, and jacket of brick-dust red, marked in various places with bivouac stains, and faded from exposure to sun and rain, but with arms and accoutrements in far better order than those of his smart neighbour. On first taking possession of Paris, the Prussians posted one or two field-pieces at each of the bridges, with a guard of infantry. These guns were kept constantly loaded, and slow-match lighted. Latterly they have been withdrawn; but we still have guards at every public building--such as the Louvre, Palais Royal, &c. These are generally English.