"The fish 'neath us are trout," Gramps whispered. "Those farther out are suckers and mullets. The shallows 'cross the pool are loaded with minnows and shiners. Down there Old Shark hangs out 'neath that sycamore trunk." He spoke as reverently as a fanatic Moslem referring to Mecca.
"Stay here and watch. Don't move. You do, you'll send every trout in the pool kiting under the ledge."
Gramps wriggled backward and disappeared. A few minutes later Bud saw him near the foot of the ledge standing behind a rock spire that hid him from the pool and at the same time gave him freedom of action. Gramps made a perfect cast. The fly floated lazily toward the leaning sycamore and gathered speed as the water became swifter.
Old Shark rose and Bud saw him, a great, dark shadow that left the shaded bank and rose into the clear water upstream from the leaning sycamore. Old Shark did seem more like a shark than a trout as he paused within an inch of the fly and then sank back into the shadows from which he had come.
Almost unable to tear his eyes from Old Shark's lair, Bud's attention was distracted for a moment by a ripple in the water beneath him. It was a grasshopper struggling toward the ledge; before it reached safety, a twelve-inch trout from the school rose and took it.
Twenty minutes later Gramps called,
"Your turn. Take it slow and crawl away, mind you."
Bud took his place behind the spire of rock and cast. He knew how clumsy he was in comparison with Gramps, but he didn't care, for now he knew why Gramps spoke so reverently of Old Yellowfoot and Old Shark.
When Bud's second turn was over, he went back to where Gramps was sitting well back on the ledge.
"We didn't get him," Gramps said, but if he was disappointed he did not show it. "There's always another day and we'll come again. Reckon we'd better go in after this last try, though. Mother's all alone."