giant work, the stone abutment built out a hundred feet on either side into the bed of the plunging water, neither rail nor wall flanking this stone causeway, but the bare unguarded width of the road-bed leading up into the bridge.
On the lips of the abutment, the builders set two stone blocks, smooth and wide, and cut places in them for the bridge timbers. It was a piece of excellent judgment, since the great stones could not be broken from the abutment, and they were mighty enough to bear the weight of a mountain. The bridge rests on three sills, each a log that, unhewn, must have taken a dozen oxen to drag it. I have often wondered at the magnitude of this labour; how these logs were thrown across the boiling water by any engines known to the early man. It was a work for Pharaoh. On these three giant sleepers the big floor was laid, the walls raised, and the whole roofed, so that it was a covered road over the Valley.
The shingle roof and the boarded sides protected the timber framework from the beating of the elements. Dry, save for the occasional
