Providence, in Rhode Island, is partially supplied by an aqueduct, but on no very extensive scale.

Richmond, the capital of Virginia, derives water from the James river by works planned by Mr. Albert Stein, who was among the engineers originally employed to survey the courses of, and make estimates for, the Croton Aqueduct. An engine house 56 feet long and 58 wide, built of stone, on the banks of the river, cover two wheel pits and two pumps, constructed like those at the Fairmount works.

The water-wheels are of cast iron, with theexception buckets and soling, 18 of the feet in diameter to the point of the buckets, 10 feet wide between the shroudings, and 14 inches depth of shrouding. The cast iron shaft of the water-wheel is 10 inches in diameter in the journals, and 16 feet 6 inches long. The head and fall of the water is 10 feet. Each pump is calculated to raise in 24 hours, 400,000 gallons into the reservoir 160 feet above the pump. The reservoir will contain one million gallons, and is divided into four apartments, two of which are for filtering.

We now come to our own great work THE CROTON AQUEDUCT.

MEMOIR

CROTON AQUEDUCT.

MEMOIR

CROTON AQUEDUCT. AT A very early day the want of a sufficient supply, and a convenient distribution of good water, was felt by the citizens of New- York.

Before the declaration of independence, considerable expenditures had been made in order to satisfy this want.

In July, 1774, the proposal of Christopher Colles, to erect a reservoir and to convey water through the several streets of the City, after having been sometime before the Common Council, was finally adopted and ordered to be carried into effect. The scheme of Mr. Colles, was simply that since adopted by the Manhattan Company, of digging large wells, and from them pumping the water up into reservoirs.