Add the typhus, with which the workmen become slowly impregnated. In our own day, after having excavated the gallery of Clichy, with a banquette to receive the principal water-conduit of Ourcq, a piece of work which was executed in a trench ten metres deep; after having, in the midst of landslides, and with the aid of excavations often putrid, and of shoring up, vaulted the Bièvre from the Boulevard de l’Hôpital, as far as the Seine; after having, in order to deliver Paris from the floods of Montmartre and in order to provide an outlet for that river-like pool nine hectares in extent, which crouched near the Barrière des Martyrs, after having, let us state, constructed the line of sewers from the Barrière Blanche to the road of Aubervilliers, in four months, working day and night, at a depth of eleven metres; after having⁠—a thing heretofore unseen⁠—made a subterranean sewer in the Rue Barre-du-Bec, without a trench, six metres below the surface, the superintendent, Monnot, died.