“I reckon she’d bust.”

“Wow!” muttered the fat boy. “When does she erupt again?”

“I don’t know. By the looks of things I should say she’d just had one. If that’s so it’ll be about an hour before there is another spout,” the guide informed them.

“I guess we can stand it if ‘Old Faithful’ can,” observed Stacy. “Can’t she be hurried any?”

“It’s been done,” grinned the guide.

“How?” demanded the fat boy eagerly.

Grace gave the guide a warning look which was wholly lost on Jim Badger.

“By greasin’ the geyser,” he replied.

“What with?” interjected Lieutenant Wingate.

“With butter, of course,” replied Emma. “But don’t you waste our butter in experiments unless you wish to be everlastingly unpopular in this outfit.”