But the Martian only grinned owlishly. He knew as well as did Carr that Ora would have her way. "Risky--pooh!" she returned. "I'm not afraid. We have our ray pistols and the funny torpedoes you brought from Mars. Besides, I don't believe it's as bad as you think." Carr shrugged his shoulders. After all, they probably would not encounter any of the savages here in the forest. Beings of far greater intelligence were responsible for those rays, that much was certain. Besides, they'd be three able-bodied men out there to watch over her, and he'd make sure she didn't get too far away from the ship. * * * * * Carr was first to step from the opened manhole to the soft carpet of the Titanese forest. He found the air cool and crisp, with a tang of ozone assailing his nostrils. There was a pulsating motion in it that he could hardly define; it seemed that it massaged his cheeks and raised the short hairs at the nape of his neck and on his forearms as if they were electrified. Those vibrations Detis had told them about were actively at work. The gravity was even less than on Mars, though slightly greater than that of Europa. Mado was entirely at ease, and the Europans would not be bothered by the slight change in their weight. But Carr would have to take it easy, as he'd done ever since leaving Earth. His muscles were too powerful for his body on these smaller worlds, though this was a mighty advantage if he took care not to over-exert. A melodious whistling note rose high somewhere in the depths of the forest and trailed off into eery silence. The sky was overcast with gray clouds and the light was poor, of little more than twilight intensity on Terra, this being partly due to the masking of the sun by the clouds and partly to their tremendous distance from that radiant body. Odd that it was not colder, he thought. Probably those vibratory radiations of Saturn's rings had something to do with the temperature in addition to their other effects. Detis was on his knees, examining a queer specimen of purplish moss which had drawn his eye. The eternal scientist in the man could not be downed. Mado had come out armed with one of the bulky kalbite torpedo-projectors and was looking around belligerently. Ora drew herself erect and took a deep breath as soon as her feet touched the ground, her eyes bright and her cheeks flushed with excitement. "Oh, Carr," she breathed, "it's marvelous; an honest-to-goodness virgin forest. We've neither of us ever seen one, you know. Aren't you thrilled?" "We-e-ll," he admitted, "I've always looked forward to wandering in just such places. But, with you along, and thinking of those barbarians we saw--" "Silly. I'm as capable as any of you. And, even if I couldn't look out for myself, I know that you will be at my side." She pursed her lips and tossed back her head provocatively. What was a man to do? * * * * *