Did ever woman invent more tantalizing question than that concluding one? What was a blue atom? No doubt, creation's scheme included blue atoms, as well as black ones and red ones. But why this reference to any particular atom? He tried the words in every possible variety of meaning. He gave them the dignity of capitals. BLUE ATOM. They became more inexplicable.

In one respect they were effective. They spoiled his dinner. He had steeled himself against every possible form of surprise, but he was forced to admit that during the next three days he must succeed in persuading Evelyn Atherley that Philip Anson was alive, and engaged in important matters in Yorkshire. That was imperative—was his scheme to be wrecked by a blue atom?

Moreover, her query must be answered. His promise to write was, of course, a mere device. It would be manifestly absurd to send her a typewritten letter, and, excellently as he could copy Philip's signature, he dared not put his skill as a forger to the test of inditing a letter to her, no matter how brief. Finally he hit upon a compromise. He wired:

"Stupid of me to omit address. Your concluding sentence mixed up in transmission. Meaning not quite clear. Am feeling so lonely.

"Philip."

Then he tried to resume his dinner, but his appetite was gone.

In postal facilities, owing to its position on a main line, York is well served from London. At 9 P. M. two letters, one a bulky package and registered, reached him.

The letter was from Mr. Abingdon. It briefly acknowledged his telegram, stated that a man in the Athenæum, who knew Sir Philip Morland, had informed him, in response to guarded inquiries, that the baronet was exceedingly well off, and called attention to some important leases inclosed which required his signature.

The other note was from Evelyn. It was tender and loving, and contained a reference that added to the mystification of her telegram.

"In the hurry of your departure yesterday," she wrote, "we forgot to mention Blue Atom. What is your opinion? The price is high, certainly, but, then, picture the joy of it—the only one in the world!"

And, again, came another message: