just being terminated; the depth attained is some six hundred metres.
That of Passy, 1855-1860, somewhat less deep, supplies the lakes of the
Bois de Boulogne; that of the Place Hebert, 1863-1893, seven hundred and
eighteen metres in depth, furnishes some large ponds in the
neighborhood.

Among the great reservoirs, the most noticeable is that of Montmartre,
rising high by the side of the church of the Sacre-Coeur, and containing
within its gray walls no less than three lakes, one above another. The
largest of all these storage basins in the city is that of the Vanne, at
the side of the principal entrance to the Parc Montsouris; in its vast,
vaulted enclosure, covered with turf, may be stored two hundred and
fifty thousand cubic metres of water. Visitors are admitted to the under
vault, where, by the light of torches, the enormous walls and the
innumerable columns that sustain this weight are dimly visible. The
water of the Avre, drawn from the two sources of the Vigne and Verneuil,
is to be stored in the still larger reservoir on the heights of
Saint-Cloud, similar in construction and now nearly completed. Each of
the three sections in which it is built will contain a hundred thousand
cubic metres.

The ancient mediaeval methods have all been put away, the inevitable
little open gutter running down the middle of the street--celebrated by
Boileau and Mme. de Stael, and many others--has long since disappeared,
but the water-supply is not yet entirely adequate, and the citizens may
still suffer for the lack of a pure liquid to drink,--as they did
through so many centuries. It not infrequently happens, as it did in the
early autumn of 1898, that several quarters of the city are
simultaneously deprived of eau de source, and compelled to use the
river-water alone. Every effort is made to avert this--as it is rightly
considered--calamity, the streets are placarded with official notices
warning the inhabitants of the approaching curtailment of their supply,
and they are notified in a similar manner when the scarcity is over. Two
solutions have been proposed for this insufficiency, both of them
involving such heavy expense that the municipality shrinks from adopting
either;--the first, to supply every dwelling with a double set of pipes,
one carrying the pure water of the aqueducts, and the other the
river-water, forced up into the upper stories; the second is to go as
far as the lakes Neuchatel, or Geneva, for an uncontamin