After passing by the buildings of the town, Rollo led the way over a narrow wooden bridge, which passed across the old moat of the town. The remains of a monstrous bastion were to be seen beyond it.
"This is a part of the old fortifications," said Rollo. "They are cutting them all to pieces now with roads and bridges leading in and out the town."
After going beyond these embankments, Rollo led the way to a path which lay along the river side. Very soon the path began to be a very pleasant one indeed. Mrs. Holiday was delighted with it. It was close to the margin of the water, and only a very few inches above the level of it. The current was very swift, and the water was so blue, and clear, and beautiful, that it was a continual pleasure to look down into it, and to watch the little waves and ripples that curled, and twirled, and dashed against the shore.
There was a row of willows between the paths and the water, or rather in the margin of the water, for the path was so near to the stream that there was scarcely room for the willows on the land. On the other side of the path there was a close hedge, which formed the boundary of a region of fields, meadows, and gardens. Here and there were gates leading through this hedge; and the party, as they walked along, could look through the openings and see the peasant girls coming out to their work from the houses. The whole region, though it was highly cultivated and extremely beautiful, was very flat and level, and was only raised two or three feet above the level of the water.
From each gateway or other opening through the hedge there were paths leading off through the fields and gardens to the houses; and there were steps at the gates leading down to the pathway that lay along the margin of the stream. The people of the houses were accustomed, it seemed, to come down there to get water.
Thus the party walked along, with the rapid current of the river close to their feet on one side, and the high green hedge shutting them in on the other, while the tops of the willow trees spreading over their heads completed the coolness and shadiness of the pathway. Rollo led the way, and his father and mother followed, one by one, for the path was not wide enough for two to walk together.
THE WATER WHEEL.
Presently they came to a place where a large water wheel of a very curious construction was seen revolving quite near the shore. They stopped to look at it. They liked to see it revolving; and then besides they wished to examine the construction of it. It was mounted on a frame of timbers that had been set up for it in the water, at a little distance from the shore. The wheel itself was much like the wheel of a steamboat; only, in addition to the ordinary float boards, it had a series of buckets on the edge of it, which took up the water from the stream, as the wheel revolved, and emptied it into a trough above, as they went over. From this trough there was a circular pipe, made very strong, which conveyed the water by a subterranean aqueduct into the field opposite, where it rose into a reservoir by the pressure of the column in the pipe, and was used to irrigate the ground.