Then they both sighed, looked queerly at each other and finally embraced and kissed. If both were somewhat smitten over the looks and conduct of these aviators, acquaintances of only a few days, certainly their stately father as yet could hardly suspect.

After the evening meal was over, they cunningly tried to persuade him to go with them down to the aerodrome to see if anything had occurred there. Probably the boys had not yet returned. The Senator doubted if they had.

"Look here, girls," said be, after being told that he was needed as an escort, "why are you so interested? They'll come back all right. And I am busy."

"Well, papa, said Avella, "we'd feel better to go down and inquire."

"Yes, daddy dear! You must go with us, please!"

The upshot of all this was as usual. The Senator went.

At the station they found Captain Byers returning from an observation post where he had been scanning the eastern heavens in a last effort to discern something of the absent planes that had long since vanished over No-Man's-Land into the unknown void beyond, which was enemy country.

"I am afraid for those lads," said he to the Senator after greeting all three. "They are both too risky at times, and they were much stirred up over Erwin's long absence. Great friends they were, too."

The Senator and the girls expressed concern. Especially so was it with the sisters, both of whom grew pale as they listened. Perhaps they were pleased that owing to the darkness this manifestation of inward concern was hidden from the others. They quietly pressed each other's hands.

Just then an orderly came up on the run, his night glasses in hand.