"What is it, Tom? And where am I supposed to get?"
"Over at the space port. Ship out of control—almost ran into Phobos coming down—and it landed with a crash. They need you fast."
"I'm coming."
The sleep was out of his eyes now. He grabbed his emergency equipment, taking along a plentiful supply of antibiotics and adjustable bandages. There was no way of knowing how many men had been hurt, and he had better be ready to treat an entire crew.
Outside the house, his bicar was waiting for him. He tossed in his equipment and hopped in after it. A throw of the switch brought in full broadcast power, and a fraction of a second later he had begun to skim over the smooth path that led over the farmland reclaimed from the desert.
The space port was less than twenty miles away, and it took him no more than ten minutes to get there. As he approached, the light blinked green at an intersection. Ah, he thought, one advantage of being a country doctor with a privileged road is that you always have the right of way. Are there any other advantages? None that you can think of offhand. You go through college with a brilliant record, you dream of helping humanity, of doing research in medicine, of making discoveries that will lengthen human life and lend it a little added happiness. And then, somehow, you find yourself trapped. The frontier outpost that's supposed to be the steppingstone to bigger things turns out to be a lifetime job. You find that your most important patients are not people, but food-animals. On Mars there are plenty of men and women, but few cows and sheep. Learn to treat them, and you really amount to something. Save a cow, and the news gets around faster than if you saved a man. And so, gradually, the animals begin to take more and more of your time, and you become known and liked in the community. You marry, you have children, you slip into a routine that dulls the meaning of the fast-hurrying days. You reach fifty—and you realize suddenly that life has passed you by. Half your alloted hundred years are gone, you can't tell where. The opportunities that once beckoned so brightly have faded in the distance.
What do you have to show for what the years have taken? One wife, one boy, one girl—
A surge of braking-power caught him from the direction of the space port. The sudden deceleration brought him out of his musings to realize that the entire area was brightly lit up. A huge ship lay across the middle of the field. Its length was at least a thousand feet, and he knew that there must be more than two dozen men in its crew. He hoped that none had been killed.
"Doc!"
Tom was rushing over to him. "How many hurt, Tom?"
"Our injuries are all minor, Doctor," said a sharp voice. "Nothing that I can't handle well enough myself."
As he stared at the man in the gold-trimmed uniform who was standing alongside Tom, he had a feeling of disappointment. If there were no serious injuries, what was the rush all about? Why hadn't they telephoned him while he was riding over, told him there was no need of him, let him get back to bed?
"I thought there was a serious crash."
"The crash was nothing, Doctor. Linton, here, was excited by our near-miss of Phobos. But we've no time to waste discussing that fact. I understand, Doctor Meltzer, that you're a first-class vet."
He flushed. "I hope you didn't drag me out of bed to treat a sick dog. I'm not sentimental about ship's pets—"
"This is no pet. Come along, and I'll show you."
He followed silently as the Captain led the way up the ramp and into the ship. Inside the vessel, there were no indications of any disorder caused by the crash. One or two of the men were bandaged around the head, but they seemed perfectly capable of getting around and doing their work.
He and the Captain were on a moving walkway now, and for three hundred feet they rode swiftly along it together, toward the back of the ship. Then the Captain stepped off, and Dr. Meltzer followed suit. When he caught sight of the thing that was waiting for him, he jaw dropped.
Almost the entire stern of the ship, about one third its length, was occupied by a great reddish creature that lay there quietly like an overgrown lump of flesh taken from some giant's butcher shop. A transparent panel walled it off from the rest of the ship. Through the panel Dr. Meltzer could see the thirty-foot-wide slit that marked the mouth. Above that was a cluster of breathing pores, looking like gopher holes, and above these was a semicircle of six great eyes, half closed and dulled as if with pain.
He had never seen anything like it before. "My God, what it it?"
"For lack of a better name, we call it a space-cow. Actually, it doesn't inhabit free space—we picked it up on Ganymede as a matter of fact—and as you can see, it doesn't resemble a cow in the least."
"Is that supposed to be my patient?"
"That's it, Doctor."
He laughed, with more anger than amusement. "I haven't the slightest idea what that behemoth is like and what's wrong with it. How do you expect me to treat it?"
"That's up to you. Now, wait a minute, Doctor, before you blow up. This thing is sick. It isn't eating. It hardly moves. And it's been getting worse almost from the time we left Ganymede. We meant to land at Marsopolis and have it treated there, but we overshot the place and when something went wrong with our drive we had no choice but to come down here."
"Don't they have any doctors to spare from town?"
"They're no better than you are. I mean that, Doctor. The vets they have in Marsopolis are used to treating pets for a standard series of diseases, and they don't handle animals as big as the ones you do. And they don't meet the kind of emergencies you do, either. You're as good a man as we can get."
"And I tell you, I don't know a thing about this overgrown hunk of protein."
"Then you'll just have to find out about it. We've radioed Earth, and hope to be getting some information soon from some of their zoo directors. Meanwhile—"
The crewmen were bringing over what appeared to be a diver's uniform. "What's this?" he asked suspiciously.
"Something for you to wear. You're going to go down into this animal."
"Into that mass of flesh?" For a moment horror left him with his mouth open. Then anger took over. "Like hell I am."
"Look, Doctor, it's necessary. We want to keep this beast alive—for scientific purposes, as well as possible value as a food animal. And how can we keep it alive unless we learn something about it?"
"There's plenty we can learn without going into it. Plenty of tests we can make first. Plenty of—"
He caught himself abruptly because he was talking nonsense and he knew it. You could take the thing's temperature—but what would the figure you got tell you? What was normal temperature for a space-cow? What was normal blood pressure—provided the creature had blood? What was normal heartbeat—assuming there was a heart? Presumably the thing had teeth, a bony skeleton—but how to learn where and what they were? You couldn't X-ray a mass of flesh like this—not with any equipment he had ever seen, even in the best-equipped office.
There were other, even more disquieting ways in which he was ignorant. What kind of digestive juices did the thing have? Suppose he did go down in a divers uniform —would the juices dissolve it? Would they dissolve the oxygen lines, the instruments he used to look around and probe the vast inside of the beast?
He expressed his doubts to the Captain, and the latter said, "These suits have been tested, and so have the lines. We know that they can stand a half hour inside without being dissolved away. If they start to go, you'll radio to us, and we'll pull you up."
"Thanks. How do I know that once the suit starts to go, it won't rip? How do I know that the juices simply won't eat my skin away?"