"It's all right with me," replied Rowson, "but Dr. Mardikian runs the professional part of this operation. I require that Spurr, Trackman, Hargedon and Aiello go as drivers, since without them even a minor mechanical problem would be more than an adventure. As I recall it, Dr. Harmon, Dr. Schlossberg, Dr. Marini and Dr. Mardikian are scheduled to go; but if any one of them is willing to let you take his or her place, I certainly don't mind." The radioman looked around hopefully. The geologists and the biologist shook their heads negatively, firmly and unanimously; but the astronomer pondered for a moment. Zaino watched tensely. "It may be all right," Schlossberg said at last. "What I want to get is a set of wind, gas pressure, gas temperature and gas composition measures around the route. I didn't expect to be more meteorologist than astronomer when we left Earth, and didn't have exactly the right equipment. Hargedon and Aiello helped me improvise some, and this is the first chance to use it on Darkside. If you can learn what has to be done with it before starting time, though, you are welcome to my place." * * * * * The communicator got to his feet fast enough to leave the deck in Mercury's feeble gravity. "Lead me to it, Doc. I guess I can learn to read a home-made weathervane!" "Is that merely bragging, or a challenge?" drawled a voice which had not previously joined the discussion. Zaino flushed a bit. "Sorry, Luigi," he said hastily. "I didn't mean it just that way. But I still think I can run the stuff." "Likely enough," Aiello replied. "Remember though, it wasn't made just for talking into." Schlossberg, now on his feet, cut in quickly. "Come on, Arnie. We'll have to suit up to see the equipment; it's outside." He shepherded the radioman to the hatch at one side of the deck and shooed him down toward the engine and air lock levels. Both were silent for some moments; but safely out of earshot of Deck Five the younger man looked up and spoke. "You needn't push, Doc. I wasn't going to make anything of it. Luigi was right, and I asked for it." The astronomer slowed a bit in his descent. "I wasn't really worried," he replied, "but we have several months yet before we can get away from each other, and I don't like talk that could set up grudges. Matter of fact, I'm even a little uneasy about having the girls along, though I'm no misogynist." "Girls? They're not--" "There goes your foot again. Even Harmon is about ten years older than you, I suppose. But they're girls to me. What's more important, they no doubt think of themselves as girls." "Even Dr. Burkett? That is--I mean--" "Even Dr. Burkett. Here, get into your suit. And maybe you'd better take out the mike. It'll be enough if you can listen for the next hour or two." Zaino made no answer, suspecting with some justice that anything he said would be wrong.