There was no point in going back southward. It might be a hundred kilometers long or a thousand, but he never could reach the end of it and thread the tumbled rocks of Den Hoorn to Oostpoort before the G-boat blastoff. There was nothing to do but turn back to Rathole and see if some other way could not be found. * * * * * Jan sat in the half-buried room and enjoyed the luxury of a pipe filled with some of Theodorus Neimeijer's mild tobacco. Before him, Dr. Sanchez sat with crossed legs, cleaning his fingernails with a scalpel. Diego's mother talked to the boy in low, liquid tones in a corner of the room. * * * * * Jan was at a loss to know how people whose technical knowledge was as skimpy as it obviously was in Rathole were able to build these semi-underground domes to resist the earth shocks that came from Den Hoorn. But this one showed no signs of stress. A religious print and a small pencil sketch of Senora Murillo, probably done by the boy, were awry on the inward-curving walls, but that was all. Jan felt justifiably exasperated at these Spanish-speaking people. "If some effort had been made to take the boy to Oostpoort from here, instead of calling on us to send a car, Den Hoorn could have been crossed before the crack opened," he pointed out. "An effort was made," replied Sanchez quietly. "Perhaps you do not fully realize our position here. We have no engines except the stationary generators that give us current for our air-conditioning and our utilities. They are powered by the windmills. We do not have gasoline engines for vehicles, so our vehicles are operated by hand." "You push them?" demanded Jan incredulously. "No. You've seen pictures of the pump-cars that once were used on terrestrial railroads? Ours are powered like that, but we cannot operate them when the Venerian wind is blowing. By the time I diagnosed the Venus Shadow in Diego, the wind was coming up, and we had no way to get him to Oostpoort." "Mmm," grunted Jan. He shifted uncomfortably and looked at the pair in the corner. The blonde head was bent over the boy protectingly, and over his mother's shoulder Diego's black eyes returned Jan's glance. "If the disease has just started, the boy could wait for the next Earth ship, couldn't he?" asked Jan. "I said I had just diagnosed it, not that it had just started, _senor_," corrected Sanchez. "As you know, the trip to Earth takes 145 days and it can be started only when the two planets are at the right position in their orbits. Have you ever seen anyone die of the Venus Shadow?" "Yes, I have," replied Jan in a low voice. He had seen two people die of it, and it had not been pleasant.