water, a fissure formed in the bed of the canal, and the water poured into the tunnel deriding the efforts of the draining-pumps. It was found necessary to employ a diver to seek for the fissure which was in the mouth of the great basin, and it was only stopped up with great difficulty. Elsewhere, near the Seine, and even at some distance from the river, as, for instance, at Belleville, Grande Rue, and Passage Lunière, bottomless sands are found, in which men have been swallowed up. Add asphyxia by miasmas, interment by slips and sudden breaking in of the soil; add typhus, too, with which the workmen are slowly impregnated. In our days, after having hollowed the gallery of Clichy with a _banquette_ to convey the mainwater conduit of the Ourque, a work performed by trenches ten metres in depth; after having arched the Bièvre from the Boulevard de l'Hôpital to the Seine, in the midst of earth-slips and by the help of trenching often through putrid matter, and of shores; after having, in order to deliver Paris from the torrent-like waters of the Montmartre, and give an outlet to the fluviatic pond of twenty-three acres which stagnated near the Barrière des Martyrs; after having, we say, constructed the line of sewers from the Barrière Blanche to the Aubervilliers road, in four months, by working day and night at a depth of eleven metres; after having--a thing unknown before--executed subterraneously a sewer in the Rue Barre du Bec, without trench, at a depth of six metres, the surveyor Monnot died. After arching three thousand metres of sewer in all parts of the city, from the Rue Traversière St. Antoine to the Rue de l'Ourcine; after having, by the Arbalète branch, freed the Censier-Mouffetard square from pluvial inundations; after having constructed the St. George sewer through liquid sand upon rubble and béton, and after having lowered the formidable pitch of the Nôtre Dame de Nazareth branch, the engineer Duleau died. There are no bulletins for such acts of bravery, which are more useful, however, than the brutal butchery of battle-fields.