"No, you aren't!" cried Charley, quickly; "I love Germany too, but America comes first."

Ernest rose with a sigh. "That may be, but with me, bed comes first."

"You will not be cross the next time we meet, eh?" asked Crazy Dutch as the men made their adieux.

"I'll try not to be!" replied Roger, not too enthusiastically.

When they had crawled into their cots, an hour later, Roger said: "Ern, do you realize that we haven't a drop of crude oil for the absorber flow?"

"Sure, I do," replied Ernest. "I've been wondering for days what we would do about it, but until I had a suggestion, I didn't want to bring the matter up."

"How much money do you think the Dean can get for the laboratory equipment?" asked Roger.

"Well, I hope at least two hundred dollars. But you know how those things go."

"We'll have to save every cent of that for grub," mused Roger. "Dick told me that over on Snake Peak there is a mine that closed down four years ago and that their engine was an oil burner. He says there hasn't been a watchman there for a year. There's a chance that they have left some oil."

"How'll you pay for it?" asked Ernest.