ESTIMATE OF THE CHANNEL TUNNEL.
“In America, the Hoosac Tunnel, in Massachusetts, through mica slate, mixed with quartz, has up to this time cost one hundred and eighty pounds per yard, and the Moorhouse Tunnel, in New Zealand, through lava streams and beds of tufa, intersected by vertical dikes of phonolite, cost sixty-eight pounds fifteen shillings per yard. It will be a convenient standard of comparison for these amounts if we remember that twenty-five pounds per yard would represent very nearly a million sterling for the twenty-two miles. Any estimate for the Channel Tunnel must at present be purely conjectural, and an estimate professing to embrace contingencies must be more conjectural than any other; but it is reckoned that the work, if practicable at all, could be completed within five years of time, and for five millions of money.”
XXXV.
THE PARISIAN SEWERS.
THE SEWERS OF PARIS.—THEIR EXTENT.—A JOURNEY THROUGH THEM.—THE START AND THE MODE OF TRAVEL.—DESCRIPTION OF THE GREAT SEWER.—ACCIDENTS OF SEWER TRAVEL.—HISTORY OF THE SEWERS.—THEIR FIRST GREAT INSPECTION.—BRUNESEAU.—INUNDATION FROM THE SEWERS.—A MAN LOST.—HORRIBLE DEATH IN THE SEWERS.—THE OLD AND THE NEW.—THE EXCAVATIONS.—NATURE OF THE WORK.—BREAKAGE OF THE CANAL.—JEAN VALJEAN IN THE SEWERS OF PARIS.—HIS FIRST SENSATION.—CAUGHT IN A LABYRINTH.—THE SEWERS OF ST. DENIS, AND THE MARKETS.—CAUGHT IN THE WATER.—THE POLICE IN PURSUIT.—FRIGHT OF THE FUGITIVE.—THE QUICKSAND ON THE COAST OF BRITTANY.—A HORRIBLE DEATH.—QUICKSAND IN THE SEWERS.—HOW IT WAS FORMED.—JEAN VALJEAN IN THE QUICKSAND.—HIS SUFFERINGS AND ESCAPE.
Paris, the gayest and brightest city in the world, has an underground life surpassing that of any other metropolis. Beneath the broad streets there are many miles of sewers constructed on a plan that furnishes a complete system of drainage. The total length of the Paris sewers is now about four hundred and thirty-four thousand yards, or three hundred miles. The length of galleries to be constructed in course of time is about two thousand yards more. To organize the network of sewers, the site of the capital has been divided into five basins, of which three are on the right and two on the left bank of the Seine.
Six great principal galleries, cutting the city nearly at right angles, and having for tributaries fifteen secondary galleries, out of which branch a multitude of galleries of less importance, constitute the principal arteries of the network. Three of the six principal galleries are on the right bank of the river: the first is that of the quays; the second descends the Boulevard de Sebastopol, and joins the first at the Place du Chatelet; and the third runs from the Place de la Bastille to the Place de la Concorde, through the streets St. Antoine and de Rivoli.
On the left bank the first gallery includes the line of the quays from the Pont d’Austerlitz to the Pont d’Iéna; the second follows the Boulevard St. Michel from the Place de l’Observatoire to the Pont St. Michel; and the third receives the Bièvre, and at the Rue St. Jacques joins the long gallery into which the sewer of the Boulevard St. Michel falls.