s, 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. After having
vaulted three thousand metres of sewer in all quarters of the city, from
the Rue Traversiere-Saint-Antoine to the Rue de l'Ourcine, after having
freed the Carrefour Censier-Mouffetard from inundations of rain by means
of the branch of the Arbalete, after having built the Saint-Georges
sewer, on rock and concrete in the fluid sands, after having directed
the formidable lowering of the flooring of the vault timber in the
Notre-Dame-de-Nazareth branch, Duleau the engineer died. There are no
bulletins for such acts of bravery as these, which are more useful,
nevertheless, than the brutal slaughter of the field of battle.

The sewers of Paris in 1832 were far from being what they are to-day.
Bruneseau had given the impulse, but the cholera was required to
bring about the vast reconstruction which took place later on. It is
surprising to say, for example, that in 1821, a part of the belt sewer,
called the Grand Canal, as in Venice, still stood stagnating uncovered
to the sky, in the Rue des Gourdes. It was only in 1821 that the city
of Paris found in its pocket the two hundred and sixty-thousand eighty
francs and six centimes required for covering this mass of filth. The
three absorbing wells, of the Combat, the Cunette, and Saint-Mande, with
their discharging mouths, their apparatus, their cesspools, and their
depuratory branches, only date from 1836. The intestinal sewer of Paris
has been made over anew, and, as we have said, it has been extended more
than tenfold within the last quarter of a century.

Thirty years ago, at the epoch of the insurrection of the 5th and 6th of
June, it was still, in many localities, nearly the same ancient sewer.
A very great number of streets which are now convex were then sunken
causeways. At the end of a slope, where the tributaries of a street or
cross-roads ended, there were often to be seen large, square gratings
with heavy bars, whose iron, polished by the footsteps of the throng,
gleamed dangerous and slippery for vehicles, and caused horses to fall.
The official language of the Roads and Bridges gave to these gratings
the expressive name of Cassis.[60]

In 1832, in a number of streets, in the Rue de l'Etoile, the Rue
Saint-Louis,