"I see," she said slowly.
They both studied that objection in silence for quite a little while. Then she suddenly and excitedly ejaculated:
"Sam!"
He jumped, and he thrilled all through. She had called him Sam entirely unconsciously, which showed that she had been thinking of him by that familiar name. With the exclamation had come sparkling eyes and heightened color, not due to having used the word, but due to a bright thought, and he almost lost his sense of logic in considering the delightful combination. It occurred to him, however, that it would be very unwise for him to call attention to her slip of the tongue, or even to give her time to think and recognize it herself.
"Another idea?" he asked.
"Indeed yes," she asserted, "and this time I know it's feasible. I don't know much about measurements in feet and inches, but there are three feet in a yard."
"Yes."
"Well, doesn't the road down there, from hill to hill, dip about ten yards?"
"Yes."
"Well then, that's thirty feet, just as high as you say the dam will have to be. Why not raise the road itself thirty feet, letting it be level and just as high as your dam?"