She stooped to open the oven door and peep at the pan of biscuit within, just beginning to turn a delicate brown. Then she looked up and caught sight of Phil. He was leaning against the window looking in, his arms crossed on the sill as if he had been enjoying the spectacle for some time. "For mercy sakes!" she exclaimed. "How long have you been there?" The coast was clear. Norman was well on his way to the Metz place, and Mrs. Ware was helping Jack get ready for breakfast. It was as good an opportunity as Phil could have hoped for, to repeat the speech he had rehearsed so many times the night before. And she looked so fresh and wholesome and sweet, standing there in her pink morning dress with the big white apron, that she was more like an apple-blossom than anything else he could think of. He wanted to tell her so; to tell her she had never seemed so dear and desirable as she did at this moment, when he must be going away to leave her. Yet how could he tell her, when she was all a-giggle and a-dimple and aglow from her romp with Norman? Clearly she was too far from his state of mind to share it now, or even to understand it. After all, she was only a little girl at heart--only eighteen. It wasn't fair to her to awaken her quite yet--to hurry her into giving a promise when she couldn't possibly know her own mind. He would wait-- So he only leaned on the window-sill and laughed at her for having been caught in such an undignified romp, and asked her when she intended to grow up, and if she ever expected to outgrow her propensity for scrapping. But when he had joked thus a few minutes, he said, quite suddenly and seriously, "Mary, I want you to promise me something." She was taking the chickens from the broiler and did not look at him until they were safely landed in the hot platter awaiting them, but she said lightly, "Yes, your 'ighness. To the 'arf of me kingdom. Wot is it?" "Well, I'm going away and I may not see you again for a long time. The chief wants me to take a position, engineering the construction of a big dam down in Mexico. It would keep me down there two years, but it would be the biggest thing I've had yet, in every way. Last night I just about made up my mind I'd take it. "While I'm gone you will be striking out into all sorts of new trails, and I am afraid that on some of them somebody will come along and try to persuade you to join him on his, even if you are such a little girl. Now I want to have a hand in choosing the right man, and I want you to promise me that you won't let anybody persuade you to do that till I come back. Or at least if they do try, that you'll send me word that they're trying, and give me a chance to come back and have a look at the fellow, and see if I think he is good enough to carry you off."