Old Robert, whose head was just visible above the bracken, was thereupon called to pack up the remains of the simple feast, and then they set forth again--skirting, but not troubling the Geinig Pool, for the sun was too strong. A beautiful pool was this Geinig Pool--the water coming tumbling down over the boulders in masses of chestnut hue and white, then sailing away in a rapid sweep of purplish blue, and then breaking over shallows (whose every ripple was a flashing diamond point) as it went whirling into the rocky channel beyond. The sun lay hot on the steep banks, where not a leaf of the birch-trees stirred now, and on the lichened rocks, and on the long strand of lilac-gray pebbles; altogether a beautiful pool this was, set deep in its cup among the hills, but for their present purposes useless. The Top Pool, which they presently reached, was altogether a different sort of place; for here the waters plunged into a roaring caldron with a din that stunned the ears; and now it was that Lionel discovered Miss Honnor's intention--he was to have the amusement of throwing a fly over this maelstrom from the side of the sheer bank, while the only foothold afforded him was the stump of an out-projecting pine. Well, he was not going to refuse--and ask a young lady to take his place. He dug his feet into the soft herbage about the roots of the tree; old Robert handed him the rod; he got out some line; and then began to try how he could get a fly down into that raging vortex, while keeping clear of the branches over his head. His first impression was that he might as well attempt to throw a fly to the moon, but presently things began to look more hopeful, and he found at length that, when the fly did get just beyond the downward rush of the fall, it was swept by the current into certain glassy deeps, where he could work it pretty well. Hard as he labored, however, that jerking little gray shrimp (for that was what the fly looked like in the water) could not stir anything. He worked away until even the indefatigable Robert said he had done enough; then he reeled up; and perhaps he was not sorry to regain the top of this sheer precipice, where there was but that single fir-stump and a few loose branches of birch between him and the seething and surging whirlpool below.