Peter waved his hand and went down the bare stairs. His knees felt weak and shaky and his eyes seemed to be at the back of his head. He drew back to let a woman pass. She cocked her golden head at him with an enquiring eye and a flash of teeth and pushed open the half-closed door of an apartment. Her high-pitched metallic voice rang out. "Say, Kid, there goes Nellie Pope's boarder. By Gosh, don't yer think some one oughter stop her?"

The two boys drove home in silence. They had both caught the meaning of those significant words.

Graham, the self-imagined man of the world, who had picked up a large collection of half-facts—as all the precocious do—but who, for all that, or in spite of that, had walked into the trap set by Ita Strabosck without the faintest perception of his danger, threw those words aside. Everything would be right, he told himself, and if he had been coming out of Nellie Pope's apartment in the ordinary way and had overheard her rival's loud comment, he would simply have shrugged his shoulders, like the rest of the young men of his type and spirit, and knowing only the tail end of the truth, told himself that all men take "chances" and that the odds were largely in his favor. And what would this attitude of puerile bravado have proved? That he and all the men like him were just as much a menace to society from knowing the half-facts which did nothing more for them than allow them to take "chances," as the men who were wholly ignorant and so blundered blindly into tragedy.

To Peter, the words of the painted woman came as a finishing blow. In his crass and culpable ignorance, into which Kenyon had flung one most terrific fact, he came away from Nellie Pope not knowing whether he was immune—not able to assure himself that he was safe. Think of it! Big and strong as he was, he remained a mere child in the matter of plain, necessary and urgent truths, and if ever a man knew himself for a fool he was Peter Guthrie, as he drove home.

No less grateful to God than ever for having been assisted to go through Harvard and Oxford clean and straight, he cursed himself for not having sought out the facts of life,—not from grinning and salacious arguments of half-informed young men, but from a proper source,—since his father had not conceived it to be his duty to give them to him early in his life. If Kenyon had not opened out a new and awful vista of thought the night that he talked about Graham and Ita Strabosck, Peter's ignorance, so jealously and mistakenly preserved, would have remained so colossal that he would have gone home humiliated, but unworried. As it was, this one thing at any rate—this one most awful thing—had sunk into his mind, making him dangerously less ignorant but without proper knowledge. He arrived home a prey, therefore, to the most hideous fear.

Luckily there were people dining with his father and mother. Belle had gone out of town for several days, suffering from the shock of finding out the truth about Kenyon, and Ethel had returned to school. Peter was able to go up to his own room unnoticed.

Graham, whose loyalty and concern had been good to see, went up with him and threw the suit-case into a corner.

"Gee!" he said, with a touch of emotion that he made no attempt to hide, "but I'm glad you're home, Petey." It was many years since he had called Peter by the name that he had gone by in the nursery. He seemed to have come so close to his big brother during those recent hours.

Peter did a surprising thing. He turned quickly, strode over to Graham, put his arm round his shoulder and kissed his cheek. For just those few moments both men had gone back through the years and were little boys again.

Two things happened to Graham. He blushed to the roots of his hair, and swallowed something that threatened to choke him.