St. Peter rose, took both of his daughter's hands, and stood laughing at her. "Come now! You have more brains than that, Kitty. It happens you do understand that whatever poor Crane can find out about space is more good to him than all the money the Marselluses will ever have. But are you implying that if Crane and I had developed Tom's discovery, we might have kept Rosie and her money in the family, for ourselves?"

Kathleen threw up her head. "Oh, I don't want her money!"

"Exactly; nor do I. And we mustn't behave as if we did want it. If you permit yourself to be envious of Rosie, you'll be very foolish, and very unhappy."

The Professor walked away across the snowy park with a tired step. He was heavy-hearted. For Kathleen he had a special kind of affection. Perhaps it was because he had had to take care of her for one whole summer when she was little. Just as Mrs. St. Peter was ready to start for Colorado with the children, the younger one developed whooping-cough and had to be left at home with her father. He had opportunity to observe all her ways. She was only six, but he found her a square-dealing, dependable little creature. They worked out a satisfactory plan of life together. She was to play in the garden all morning, and was not on any account to disturb him in his study. After lunch he would take her to the lake or the woods, or he would read to her at home. She took pride in keeping her part of the contract. One day when he came out of his study at noon, he found her sitting on the third floor stairs, just outside his door, with the arnica bottle in one hand and the fingers of the other puffed up like wee pink sausages. A bee had stung her in the garden, and she had waited half the morning for sympathy. She was very independent, and would tug at her leggings or overshoes a great while before she asked for help.

When they were little girls, Kathleen adored her older sister and liked to wait on her, was always more excited about Rosie's new dresses and winter coat than about her own. This attachment had lasted even after they were grown. St. Peter had never seen any change in it until Rosamond announced her engagement to Louie Marsellus. Then, all at once, Kathleen seemed to be done with her sister. Her father believed she couldn't forgive Rosie's forgetting Tom so quickly.

It was dark when the Professor got back to the old house and sat down at his writing-table. He would have an hour on his notes, he told himself, in spite of families and fortunes. And he had it. But when he looked up from his writing as the Angelus was ringing, two faces at once rose in the shadows outside the yellow circle of his lamp: the handsome face of his older daughter, surrounded by violet-dappled fur, with a cruel upper lip and scornful half-closed eyes, as she had approached her car that afternoon before she saw him; and Kathleen, her square little chin set so fiercely, her white cheeks actually becoming green under her swollen eyes. He couldn't believe it. He rose quickly and went to his one window, opened it wider, and stood looking at the dark clump of pine-trees that told where the Physics building stood. A sharp pain clutched his heart. Was it for this the light in Outland's laboratory used to burn so far into the night!

VIII

The following week St. Peter went to Chicago to give his lectures. He had engaged rooms for himself and Lillian at a quiet hotel near the university. The Marselluses went down by the same train, and they all alighted at the station together, in a raging snow-storm. The St. Peters were to have tea with Louie at the Blackstone, before going to their own quarters.

Tea was served in Louie's suite on the lake front, with a fine view of the falling snow from the windows. The Professor was in a genial mood; he was glad to be in a big city again, in a luxurious hotel, and especially pleased to be able to sit in comfort and watch the storm over the water.

"How snug you are here, Louie! This is really very nice," he said, turning back from the window when Rosamond called him.