"Sister--" She glanced at the sallow-cheeked Enid shrewdly. "You look sort of peaked. You too, Crystal. You look older, honey. Well, Greg--ready? We'd better be running along. 'Tina's got our breakfast almost ready. Fruit juice and porridge and pancakes with butter and sugar-syrup. Sounds good, eh? Well, 'bye, folks!" And by main force she herded the two men swiftly out of the skiff. Outside, moving toward the hill, Sparks turned on her pettishly. "Now, what did you go and do that for, Aunt Maud--you've gummed up everything! Greg was telling 'em off; just beginning to make 'em listen to reason--" Aunt Maud grinned and winked broadly at Greg. "Sparks, are all radiomen as dumb as you, or do you hold the championship? Greg could talk from now to doomsday and not get anywhere with that outfit. I _know_. They're my own haughty, independent, pigheaded flesh and blood. "But that stew I brought them--" She chuckled and rolled her eyes delightedly. "Now, that's a _real_ argument. The best their bellies ever listened to. Just wait and see!" VII The truth of her statement was exhibited very soon. That very afternoon, in fact. The dim Titanian sun was settling toward the westward hilltops, and Greg was just putting the finishing touches to a crude grist-mill he was rigging for the women, when there came the scrape of hesitant footsteps up the rocky pathway. Hannigan had been away since breakfast time, making a survey of the natural resources within easy distance of their cave. Greg thought it was the radioman returning. "Hi!" he shouted over his shoulder, without looking back. "Any luck? What did you find?" Then, as no voluble, profane, fantastic answer was forthcoming, he turned around. His eyes momentarily betrayed his astonishment. "Oh! Hello, Andrews!" he said. Bert Andrews shuffled uncomfortably. His gaze held a curious mixture of wistfulness, reluctance and expectancy. He said, in a voice that was a trifle too breathlessly nonchalant, "Hello, Malcolm. Just taking a little stroll, so I thought I might drop up and see--see how you're making out." He glanced about him, obviously impressed. "Not so bad," he said. "Not bad at all! That's the cave, I suppose? See you have things pretty well straightened out. What's that?" Greg's gaze followed his nod to the crosswork which was suspended directly above the cave-mouth; a latticework of steel, firmly wire-lashed, secured by a rope, the stretch of which dipped into the cave itself. "Barrier-shield," explained Greg. "Hangs on a pulley. We can drop it from inside. In case of attack, you see. Slides down that groove into the channel cut in the ground, holds tight there." He grunted. "That's one of the reasons we don't have any honest-to-John furniture in our home. We had too many other important uses for the metal."