"You're getting to be nothing better than a common scold, Ern," returned Roger with a laugh. "I'll be glad to get you out of the camp. Run along now and do your little errand."
With a routine established for caring for the two households, Roger bent all his splendid mind and energies on re-making the engine. Charley, coming to the camp one afternoon, as she or Elsa often did to cheer Roger's long day, watched him as he worked with infinite care to adjust a gauge he had taken apart.
"One of the many things that break me up," she said, "is that you missed the visit from the Smithsonian man."
"As it turns out," replied Roger, stoutly, "I didn't miss anything. I found when I got to work again that my safety device was inadequate and I've been all this time evolving a new one. If I'd run the engine as it was, I might have had a nasty blow-up and I've made one or two other changes, too, that are important."
"The engine doesn't look so very different to me," said Charley.
Roger chuckled. "Her whole insides have been made over really, by just a few changes. When Dean Erskine gets the new parts made and down here, I'll be O. K. I sent the design up to him when Ernest went in and some new parts ought to be here in a couple of weeks, now. I told Ern to have Hackett deliver them on arrival. It's too complicated to explain to you but I had another corking good idea the day that Dick went. I'm glad Arlington won't get here for six months."
Charley's eyes filled with sudden tears. "You're a lamb, Roger," she murmured.
"Where's Gustav?" asked Roger, quickly.
"He's puttering with the Lemon. If you need him, I'll go up for him."
"No, you won't. It seems to me that you need water on the alfalfa badly. The second field is getting pretty yellow."
Charley sighed. "I know it! Roger, that well just isn't adequate. I've told Dick so fifty times. He should have begun work on a driven well, long ago, but he's simply hipped on the powers of this present well. I think that the old thing is going dry."
"You do?" Roger's tone was startled. "Here, there's no hurry on this job. I'm just waiting really for the new parts. Let's go up and have a look at your whole water outfit."
They set off forthwith, the Lemon starting on its uneasy way, just as they reached the pumping shed.
"Something's wrong, certainly," exclaimed Roger, watching the stream of water that came from the pump. "There isn't half the usual stream there. Do you think the pump is all right, Gustav?"