Dunstan joined in the merry laughter at the expense of the grinning "Peewee" which followed, then, seizing Don by the arm, he exclaimed:
"Come, boy, you look quite serious—upon what, may I ask, are your thoughts fixed so intently?"
"Upon the Château de Morancourt," laughed Don. "That's quite a story, Dunstan."
[CHAPTER III]
ON DUTY
Early on the following morning, while the light of the coming day was slowly spreading throughout the heavens and by degrees bringing into view the landscape which for long hours the deep shades of night had gathered to themselves, Don Hale and Dunstan Farrington clambered into ambulance number eight and took their places on the driver's seat.
"Another forty-eight hours of duty at the outpost ahead of us!" exclaimed Don.
"Yes; and I hope there won't be too much excitement!" said Dunstan. "I reckon Chase Manning would agree to that sentiment."
"There's a chap whose acquaintance I am certainly going to cultivate," laughed the aviator's son.