There are also several subterraneous passages under roads one is two hundred yards long. At Islington the ;

canal is fourteen and a half feet wide, and four and a half feet deep. From the New River head reservoir, which is fifty-eight feet above the River Thames, the water is raised thirty-five feet by steam engines, into two reservoirs. One is situated near Pentonville, and the other near Tottenham Court road. They each contain five acres, and are ten feet in depth.

As a matter of fact, however, we can state from our own experience, that this new river is freely used for bathing, and that too, within a very few miles of London. Finally, as to cost, the Report says :

" From the best am satisfied, that the waters of the Croton River opinion I can form, I maybe taken at Pine's Bridge, and delivered on the Island, "for a sum not exceeding $750,000, in an open canal, and with stone linings, ditching, and walls, and including damages and other contingencies, it may swell the cost to $850,000. The expense of distribution and reservoirs on the island, may amount to $1,650,000 more, which would make the whole cost of the work $2,500,000.

CROTON AQ.UEDUCT. H5 The fact before alluded to, that no accurate survey of the route was made, will sufficiently account for the inadequacy of these estimates ,as since proved by the actual cost. Contemporaneously with the exploration, by Col. Clinton, of the Croton route, Timothy Dewey and Wm. Sewal, under the direction of Benj. Wright, then Street Commissioner of the city, explored a route from Macomb's Dam to the Bronx river, with the expectation of being able to bring the water of that river to the dam, at an elevation of 120 feet above tide. This was found to be impracticable; the waters of the Bronx, the Rye Ponds and Wampus Pond were guaged, and the ground between them and the Harlem river examined, and the conclusion of the engineers was, that a superabundant supply from these sources could be relied on.