After going up the Rue St. Jacques, leaving the barrière on one side, and following for some distance the old inner boulevard, you reach the Rue de la Santé, then the Glacière, and just before coming to the small stream of the Gobelins, you notice a sort of field, the only spot on the long and monotonous belt of Parisian boulevards, where Ruysdael would be tempted to sit down. I know not whence the picturesque aspect is obtained, for you merely see a green field crossed by ropes, on which rags hang to dry; an old house built in the time of Louis XIII., with its high-pitched roof quaintly pierced with garret-windows; broken-down grating; a little water between poplar trees; women's laughter and voices; on the horizon you see the Pantheon, the tree of the Sourds-Muets, the Val de Grâce, black, stunted, fantastic, amusing, and magnificent, and far in the background the stern square towers of Notre Dame. As the place is worth the trouble of visiting, no one goes there; scarce a cart or a wagon passes in a quarter of an hour. It once happened that Marius's solitary rambles led him to this field, and on that day there was a rarity on the boulevard, a passer-by. Marius, really struck by the almost savage grace of the field, asked him: "What is the name of this spot?" The passer-by answered, "It is the Lark's field;" and added, "It was here that Ulbach killed the shepherdess of Ivry." But, after the words "the Lark," Marius heard no more, for a word at times suffices to produce a congelation in a man's dreamy condition: the whole thought is condensed round an idea, and is no longer capable of any other perception. The Lark, that was the appellation which had taken the place of Ursule in the depths of Marius's melancholy. "Stay," he said, with that sort of unreasoning stupor peculiar to such mysterious asides, "this is her field, I shall learn here where she lives." This was absurd but irresistible, and he came daily to this Lark's field. CHAPTER II. CRIMES IN EMBRYO INCUBATED IN PRISONS.