Scour and Silt

Scour went first, because the grain's journey began with her. "This grain was once part of a mountain," Scour said, turning it in her paw. "High up, sharp, hard. Then the rain froze in its cracks and split it. The wind scraped it. A river caught the broken piece and tumbled it — for years, for thousands of years — wearing off every edge until it was this smooth little grain, and carrying it all the way down from the peak toward the sea. That is my work: weathering and erosion. I break the mountain loose and I carry it away." She held the grain up proudly. "This grain is proof that I can bring even a mountain low."

The student looked at the grain — but she still didn't know where it was going, only where it had been.

Silt had been standing quietly, and now she spoke. "Scour's work is true," she said, "but it is only the first half of the grain's life. A carried grain cannot travel forever. The river slows — at a lake, at the sea, at a still place — and the grain does what all carried things finally do. It settles." She tipped her layer-jar so its bands lay level. "It comes to rest, and another grain rests on top of it, and another, until they build a layer. That is my work: deposition. What Scour carries off, I lay back down. This grain's journey does not end when the mountain wears away. It ends — for now — as a new grain of new ground, in a new layer, at the bottom of the sea."

The student turned from one to the other, beginning to see that neither had the whole story alone.

And then, over the single grain, the two of them told the whole journey together — and had the student trace it, so she could feel that the tearing-down and the laying-back-down were one unbroken cycle.

"Follow the grain," Scour said, "and you will pass through both our hands." So they traced it as one. It begins as mountain — high and hard (this is where Heave's work ends and Scour's begins). Scour breaks it loose and the river carries it down — weathering, then erosion. The river slows, and the grain settles — deposition, Silt's work — and lies down as the newest band in a stack of layers. And there, buried under more and more layers over ages, it may press into stone, and one day rise as a new mountain, to be worn away again. The student watched the grain travel the full loop — mountain, to river's cargo, to new layer, to stone, to mountain — and understood: what Scour tears down is exactly what Silt builds up. The wearing-away is not an ending; it is the first half of a laying-down. "I don't destroy the land," Scour said. "I hand it to Silt." "And I don't invent new land," said Silt. "I receive what Scour brings me." Two halves. One grain. One endless give-and-take.