"You're sure she went home?" his eyes dwelt rather sharply upon Bill's lean, leathery face. Bill looked up from the slow disintegration of the splinter. He spat toward the stove again, looked down at the splinter, and then got up quite unexpectedly.

"Hell, no! I ain't shore, but I can quick enough find out." He brushed past Sudden and took long steps toward the camp. Sudden followed him.

The boys were standing in a group, holding their hat brims down to shield their eyes from the bitter glare of the sun while they gazed up into the sky, their faces turned towards the south. A speck was scudding across the blue—a speck that rapidly grew larger, circled downward in a great, easy spiral. Sudden and Bill perforce turned and held their own hat brims while they looked.

"Sa-ay, if that there's Skyrider sailin' around in an airship, he's shore got the laugh on us fellers," Aleck observed, squinting his nose until his gums showed red above his teeth. "Look at 'im come down, would yuh!"

"Wonder where he got it?" little Curley hazarded. "I always told you fellers—"

"Does anybody know where Mary V went?" Sudden's voice brought them all facing him. They looked at him uncomprehendingly for a minute, then uncertainly at one another.

"Why—she was going to take a picture of a cactus. I dunno where she went after that." This was Bud, a shade of uneasiness creeping into his face.

"Which way did she go? Toward home?"

"She started that way—back toward Snake Ridge—"

"I seen her riding east," Curley broke in. "Jake shore was pickin' 'em up and layin' 'em down too. I thought at first he was running off with her, but he wasn't. He slowed down, climbin' that lava slope—and after that I didn't see no more of 'er."