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Rh Caplong, and Orredon, that feed the other Neste of Aure have also been utilized for the same purpose, at an enormous expense and by remarkably daring works of engineering. This has had a subsidiary advantage, that the superb scenery at the sources of these streams is now accessible by good roads, whereas formerly it could be reached only by difficult and dangerous mule-paths.

At La Barthe the Neste debouches from the mountains through a deep valley, the canal passing above it on the left bank; and although the river has been thus tapped, it still continues to bring down a considerable amount of water, the overflow from its reservoirs far away in the laps of the high mountain ridge.

The Val d'Aure constituted a viscounty, and of the viscounts there were several branches: one that of the Viscounts of Larbouste, another that of the viscounts of Asté, one of whom, as already mentioned, married the heiress of Grammont. The whole of Aure was under the overlordship of the counts of Armagnac.

La Barthe, commanded by a castle of the end of the eleventh century, will not long detain a visitor. But a short way above it is the village of Lortet, where are caverns in the face of the limestone cliff that have been occupied and fortified, it is thought, originally by the Saracens and the Visigoths; but the structures that remain, notably the tower, were the work of the Templars, to whom were confided the defence of most of the passes of the Pyrenees. At Hèches is a picturesque, ivy-clad tower occupying the summit by a rock. Here are quarries of marble, rose-coloured, grey, and white, spotted with black; as also of black marble veined with white. But the principal marble quarries are farther up, at Sarrancolin on the left bank, others are on the