I pray the reader to observe how I spell the name of Nimes, with neither an s nor a circumflex, neither as Nismes, nor as Nîmes, for both are wrong. Nimes is Nemausus, and there is no s to be sounded or suppressed in the ancient name of the place, which comes from the Keltic _naimh_, a fountain or spring. And in very truth no other name could better suit it, for here under a limestone hill wells up the river in one large flood sufficient for boats to go on it at once. This great green spring, ever flowing, mysterious even nowadays, is the great feature of Nimes, and this fountain certainly awoke the veneration of the old Gauls, who believed it to be a direct gift of the gods. One follows up a canal between streets planted with trees, and looks down into the pure water like liquid green glass, then suddenly reaches a garden. Above rises a wooded hill, thick with pines, syringa, Judas tree of brilliant pink lake, laburnum with its chains of gold, forming an arc of flowers, and sees before one a wide enclosed pool, walled round, of the shape of the figure 8, heaving with cold pure water that flows away under the terrace and falls with a roar to the lower level of the canal. On one side are ruins--of a temple to the Nymphs; but one cannot at first look at that, the volume of water engages one--a lake lifting itself up by its own strength out of the earth, always, night and day, inexhaustible, hardly varying in volume, coming no one knows whence, deep and green, with no visible bottom, without a bubble, without a ruffle--it is indeed wonderful. I have seen the spring of the Danube at Donaueschingen: it is nothing to this; the fountain of Vaucluse one can understand--it breaks out from a cave in the mountainside, like scores of others; this is otherwise--a river rising with no fuss, no display, no noise, without even a ripple.
It does not gush, it does not boil up. It is simply one glassy surface, and looking at it you cannot conceive that it is a river rising vertically and sliding away under your feet. Pliny says of the source of the Clitumnus: "At the foot of a little hill covered with venerable and shady trees, a spring issues which, gushing out in different and unequal streams, forms itself, after several windings, into a spacious basin, so extremely clear that you may see the pebbles, and the little pieces of money that are thrown into it, as they lie at the bottom." I have quoted this passage, not because the source of the Clitumnus at all resembles that of the river at Nimes, but because of the mention of the coins thrown in. Suetonius speaks of this same practice in his life of Augustus. Now this fountain at Nimes has yielded, and yields still, an almost inexhaustible supply of Roman and Gaulish and Gallo-Greek coins that have been thus thrown in as oblations to the nymphs in remote times; and these coins are now in the museums of Nimes and Paris, and in those of private collectors. The same custom still remains, but instead of coins, pins are now cast into springs.