Wilson followed, and, having seen her seated, dropped into a chair behind her. She played brilliantly and with great musical feeling. Wilson could not imagine her permitting herself to do anything badly, but he was surprised at the cleanness of her execution. He wondered how a woman with so many duties had managed to keep herself up to a standard really professional. It must take a great deal of time, certainly, and Bartley must take a great deal of time. Wilson reflected that he had never before known a woman who had been able, for any considerable while, to support both a personal and an intellectual passion. Sitting behind her, he watched her with perplexed admiration, shading his eyes with his hand. In her dinner dress she looked even younger than in street clothes, and, for all her composure and self-sufficiency, she seemed to him strangely alert and vibrating, as if in her, too, there were something never altogether at rest. He felt that he knew pretty much what she demanded in people and what she demanded from life, and he wondered how she squared Bartley. After ten years she must know him; and however one took him, however much one admired him, one had to admit that he simply wouldn't square. He was a natural force, certainly, but beyond that, Wilson felt, he was not anything very really or for very long at a time.

　　Wilson glanced toward the fire, where Bartley's profile was still wreathed in cigar smoke that curled up more and more slowly. His shoulders were sunk deep in the cushions and one hand hung large and passive over the arm of his chair. He had slipped on a purple velvet smoking-coat. His wife, Wilson surmised, had chosen it. She was clearly very proud of his good looks and his fine color. But, with the glow of an immediate interest gone out of it, the engineer's face looked tired, even a little haggard. The three lines in his forehead, directly above the nose, deepened as he sat thinking, and his powerful head drooped forward heavily. Although Alexander was only forty-three, Wilson thought that beneath his vigorous color he detected the dulling weariness of on-coming middle age.

　　The next afternoon, at the hour when the river was beginning to redden under the declining sun, Wilson again found himself facing Mrs. Alexander at the tea-table in the library.

　　"Well," he remarked, when he was bidden to give an account of himself, "there was a long morning with the psychologists, luncheon with Bartley at his club, more psychologists, and here I am. I've looked forward to this hour all day."

　　Mrs. Alexander smiled at him across the vapor from the kettle. "And do you remember where we stopped yesterday?"

　　"Perfectly. I was going to show you a picture. But I doubt whether I have color enough in me. Bartley makes me feel a faded monochrome. You can't get at the young Bartley except by means of color." Wilson paused and deliberated. Suddenly he broke out: "He wasn't a remarkable student, you know, though he was always strong in higher mathematics. His work in my own department was quite ordinary. It was as a powerfully equipped nature that I found him interesting. That is the most interesting thing a teacher can find. It has the fascination of a scientific discovery. We come across other pleasing and endearing qualities so much oftener than we find force."

　　"And, after all," said Mrs. Alexander, "that is the thing we all live upon. It is the thing that takes us forward."

　　Wilson thought she spoke a little wistfully. "Exactly," he assented warmly. "It builds the bridges into the future, over which the feet of every one of us will go."

　　"How interested I am to hear you put it in that way. The bridges into the future—— I often say that to myself. Bartley's bridges always seem to me like that. Have you ever seen his first suspension bridge in Canada, the one he was doing when I first knew him? I hope you will see it sometime. We were married as soon as it was finished, and you will laugh when I tell you that it always has a rather bridal look to me. It is over the wildest river, with mists and clouds always battling about it, and it is as delicate as a cobweb hanging in the sky. It really was a bridge into the future. You have only to look at it to feel that it meant the beginning of a great career. But I have a photograph of it here." She drew a portfolio from behind a bookcase. "And there, you see, on the hill, is my aunt's house."

　　Wilson took up the photograph. "Bartley was telling me something about your aunt last night. She must have been a delightful person."

　　Winifred laughed. "The bridge, you see, was just at the foot of the hill, and the noise of the engines annoyed her very much at first. But after she met Bartley she pretended to like it, and said it was a good thing to be reminded that there were things going on in the world. She loved life, and Bartley brought a great deal of it in to her when he came to the house. Aunt Eleanor was very worldly in a frank, Early-Victorian manner. She liked men of action, and disliked young men who were careful of themselves and who, as she put it, were always trimming their wick as if they were afraid of their oil's giving out. MacKeller, Bartley's first chief, was an old friend of my aunt, and he told her that Bartley was a wild, ill-governed youth, which really pleased her very much. I remember we were sitting alone in the dusk after Bartley had been there for the first time. I knew that Aunt Eleanor had found him much to her taste, but she hadn't said anything. Presently she came out, with a chuckle: `MacKeller found him sowing wild oats in London, I believe. I hope he didn't stop him too soon. Life coquets with dashing fellows. The coming men are always like that. We must have him to dinner, my dear.' And we did. She grew much fonder of Bartley than she was of me. I had been studying in Vienna, and she thought that absurd. She was interested in the army and in politics, and she had a great contempt for music and art and philosophy. She used to declare that the Prince Consort had brought all that stuff over out of Germany. She always sniffed when Bartley asked me to play for him. She considered that a newfangled way of making a match of it."

　　When Alexander came in a few moments later, he found Wilson and his wife still confronting the photograph. "Oh, let us get that out of the way," he said, laughing. "Winifred, Thomas can bring my trunk down. I've decided to go over to New York to-morrow night and take a fast boat. I shall save two days."