things. You will need a field, and you will need a witness. I can give you the field. My lower field, the one that takes water last. And for the witness, there is the county surveyor, who measures for the territory and answers to no man in this valley. But a trial like that will cost you something, Miss Ivers. A man will not sign his name to a trial he expects to lose, and Halden will not sign his name at all, unless you give him a reason to believe he cannot lose."
Selma looked at him, and then she looked at her proposal, and then she looked out the schoolhouse window at the creek, running full in the spring evening, and she understood what he was telling her, and what it would require of her. A field. A witness. And a stake large enough to make a confident man sign.
She nodded, slowly, and she said, "Then I will give him one."
Selma did not go home at once. She stayed in the schoolhouse after the men had gone, wiping the slates clean out of habit, because her hands needed something to do while her mind caught up with what had happened. The room smelled of lamp oil and damp wool, and the benches were still warm from the men who had sat on them. She stacked her proposal papers, squared their edges, and tied them with the same string she used for her notebooks, and she thought about the vote — not with anger, which would have been easier, but with a clear, cold attention, the way she examined a sum that had come out wrong, looking for the place where the error had entered.
The error, she decided, was not in her numbers. The error was in the room. A meeting could listen to numbers and still refuse them, because a meeting was made of men, and men had interests, and habits, and loyalties, and a schedule that had fed their fathers was not a thing they would set aside for a paper, however neat. She had asked a room to change its mind, and a room changes its mind slowly, if it changes it at all. What she needed was not a better argument. She needed a different kind of proof — proof that did not ask anyone's permission, and could not be voted down, because it would be standing in a field, green, where everyone could see it.
She was so deep in this thought that she did not hear the step on the schoolhouse floor until Rolf Halden spoke, and she turned to find him standing by the door, his hat in his hands, looking younger than his twenty-four years and uncomfortable in a way that had nothing to do with the evening cold.
"Miss Ivers," he said, and then he stopped, as if he had rehearsed a sentence and lost it halfway. "Miss Ivers, I wanted to ask — when you measure the flow at a headgate, how do you measure the amount? Not the depth. The amount that passes."
It was a serious question, asked seriously, and she answered it seriously, the way she answered her pupils when they asked a real question: with the gauge board for depth, and the width of the gate, and a chip of wood floated over a measured distance and timed with a watch, so that depth and width and speed together gave the volume. She showed him, on the back of her proposal, how the calculation worked, with a small sketch of a gate and the figures beside it.
"And the water that runs off the end of a flooded field," he said, after a moment, "and back into the creek below — is it truly lost? It returns to the creek, after all."
"It returns," she said, "but it returns below the fields that needed it. The loss is not in the amount, Mr. Halden. The loss is in the timing. Water that arrives after a field has waited eleven days is water that arrives too late for the blossom, whatever the creek may do with it afterward."