From Stanton Harcourt we drove--I forget how far--to a point where a boat was waiting for us upon the Thames, or some other stream; for I am ashamed to confess my ignorance of the precise geographical whereabout. We were, at any rate, some miles above Oxford, and, I should imagine, pretty near one of the sources of England's mighty river. It was little more than wide enough for the boat, with extended oars, to pass,--shallow, too, and bordered with bulrushes and water-weeds, which, in some places, quite overgrew the surface of the river from bank to bank. The shores were flat and meadow-like, and sometimes, the boatman told us, are overflowed by the rise of the stream. The water looked clean and pure, but not particularly transparent, though enough so to show us that the bottom is very much weed-grown; and I was told that the weed is an American production, brought to England with importations of timber, and now threatening to choke up the Thames and other English rivers. I wonder it does not try its obstructive powers upon the Merrimack, the Connecticut, or the Hudson,--not to speak of the St. Lawrence or the Mississippi! It was an open boat, with cushioned seats astern, comfortably accommodating our party; the day continued sunny and warm, and perfectly still; the boatman, well trained to his business, managed the oars skilfully and vigorously; and we went down the stream quite as swiftly as it was desirable to go, the scene being so pleasant, and the passing hour so thoroughly agreeable. The river grew a little wider and deeper, perhaps, as we glided on, but was still an inconsiderable stream; for it had a good deal more than a hundred miles to meander through before it should bear fleets on its bosom, and reflect palaces and towers and Parliament-houses and dingy and sordid piles of various structure, as it rolled to and fro with the tide, dividing London asunder. Not, in truth, that I ever saw any edifice whatever reflected in its turbid breast, when the sylvan stream, as we beheld it now, is swollen into the Thames at London. Once, on our voyage, we had to land, while the boatman and some other persons drew our skiff round some rapids, which we could not otherwise have passed; another time, the boat went through a lock. We, meanwhile, stepped ashore to examine the ruins of the old nunnery of Godstowe, where Fair Rosamond secluded herself, after being separated from her royal lover. There is a long line of ruinous wall, and a shattered tower at one of the angles; the whole much ivy-grown,--brimming over, indeed, with clustering ivy, which is rooted inside of the walls. The nunnery is now, I believe, held in lease by the city of Oxford, which has converted its precincts into a barnyard. The gate was under lock and key, so that we could merely look at the outside, and soon resumed our places in the boat.