which is about one hundred yards
above the Genessee Falls, rests upon a slate rock, and is seven hundred
and eighty feet long.

[_Travels_:

We left Canandaigua in the afternoon, and rode through Victor,
Mendon, and Pittsford, to Rochester. On this route we observed
nothing particularly interesting....

We arrived at Rochester at half past eight o'clock in the evening,
and took lodgings at the Eagle Tavern. We crossed the Genesee river,
which divides Rochester into two parts, on a wooden bridge, the
first that we had hitherto met in the United States that was built
firmly and properly. It rests upon stone piers, and is made of solid
beams, with thick and well fastened planks. The next morning we
walked through the town, and were pleased with its rapid increase.
In 1812, there was not a single house here; nothing but a
wilderness; and the land could be purchased at one dollar and
twenty-five cents per acre. At present, Rochester is one of the most
flourishing towns in the state of New York.... Several hundred yards
below the bridge the Genesee river is about two hundred yards wide,
and has a fall of ninety-five feet, which at present, however, did
not appear to much advantage. Above the falls is a race which
conducts the water to several mills, and it again flows into the
river below the falls, where it forms three beautiful cascades,
which reminded me of the Villa di Macen, at Tivoli.

At Rochester the Erie canal is carried over the Genesee river by a
stone aqueduct bridge, and resembles that of the Bridgewater
canal at Manchester, in England. This aqueduct, which
is about one thousand yards above the falls, rests upon a base of
slate rock, and is seven hundred and eighty feet long....]

[[_Alida_ was written after the Erie Canal was enlarged and the
Rochester aqueduct relocated. So "one hundred" and "one thousand"
may both be correct, apart from the underlying anachronism.]]

The party now left Rochester at nine o'clock, and went on board the
canal packet-boat Ohio. The canal, between Lockport and Rochester, runs
the distance of sixty-three miles through a tolerably level country, and
north of the Rochester ridge. This ridge consists of a series of rocks,
which form the chain of mountains which commences north of Lake Erie,
stretches eastward to the Niagara river, confines it, and forms its
falls; then continues its course, and forms the differen