"By God--" he broke off abruptly.
"That's what you been looking for, ain't it ?" asked the dentist.
"LOOKING for! LOOKING for!" Cribbens checked himself.

"That's SLATE all right, and that's granodiorite, I know"-- he bent down and examined the rock--"and here's the quartz between 'em; there can't be no mistake about that.

Gi' me that hammer," he cried, excitedly.

"Come on, git to work.

Jab into the quartz with your pick; git out some chunks of it." Cribbens went down on his hands and knees, attacking the quartz vein furiously.