'The Hunter shape is forbidden to you.'
'Not here it isn't,' Ger said, still wagging his tail.
'Let's have no more of this,' Pid said angrily. 'Get into that installation and set up your Displacer. I'll try to overlook this heresy.'
'No,' Ger said. 'I don't want the Grom here. They'd ruin it for the rest of us.'
'He's right,' a nearby oak tree said.
'Ilg!' Pid gasped. 'Where are you?'
Branches stirred. 'I'm right here,' Ilg said. 'I've been Thinking.'
'But—your caste—'
'Pilot,' Ger said sadly, 'why don't you wake up? Most of the people on Grom are miserable. Only custom makes us take the caste-shape of our ancestors.'
'Pilot,' Ilg said, 'all Grom are born Shapeless!'
'And being born Shapeless, all Grom should have Freedom of Shape,' Ger said.
'Exactly,' Ilg said. 'But he'll never understand. Now excuse me. I want to Think.' And the oak tree was silent.
Pid laughed humorlessly. 'The Men will kill you off,' he said. 'Just as they killed off all the other expeditions.'
'No one from Grom has been killed,' Ger told him. 'The other expeditions are right here.'
'Alive?'
'Certainly. The Men don't even know we exist. That Dog I was Hunting with is a Grom from the twelfth expedition. There are hundreds of us here, Pilot. We like it.'
Pid tried to absorb it all. He had always known that the lower castes were lax in caste-consciousness. But this was preposterous!
This planet's secret menace was—freedom!
'Join us, Pilot,' Ger said. 'We've got a paradise here. Do you know how many species there are on this planet? An uncountable number! There's a shape to suit every need!'
Pid ignored them. Traitors!
He'd do the job all by himself.
So Men were unaware of the presence of the Grom. Getting near the reactor might not be so difficult after all. The others had failed in their duty because they were of the lower castes, weak and irresponsible. Even the Pilots among them must have been secretly sympathetic to the Cult of Shapelessness the Chief had mentioned, or the alien planet could never have swayed them.
What shape to assume for his attempt?
Pid considered.
A Dog might be best. Evidently Dogs could wander pretty much where they wished. If something went wrong, Pid could change his shape to meet the occasion.
'The Supreme Council will take care of all of you,' he snarled, and shaped himself into a small brown Dog. 'I'm going to set up the Displacer myself.'
He studied himself for a moment, bared his teeth at Ger, and loped toward the gate.
He loped for about ten feet and stopped in utter horror.
The smells rushed at him from all directions. Smells in a profusion and variety he had never dreamed existed. Smells that were harsh, sweet, sharp, heavy, mysterious, overpowering. Smells that terrified. Alien and repulsive and inescapable, the odors of Earth struck him like a blow.
He curled his lips and held his breath. He ran on for a few steps, and had to breathe again. He almost choked.
He tried to remold his Dog-nostrils to be less sensitive. It didn't work. It wouldn't, so long as he kept the Dog-shape. An attempt to modify his metabolism didn't work either.
All this in the space of two or three seconds. He was rooted in his tracks, fighting the smells, wondering what to do.
Then the noises hit him.
They were a constant and staggering roar, through which every tiniest whisper of sound stood out clearly and distinct. Sounds upon sounds—more noise than he had ever heard before at one time in his life. The woods behind him had suddenly become a mad-house.
Utterly confused, he lost control and became Shapeless.
He half-ran, half-flowed into a nearby bush. There he re-Shaped, obliterating the offending Dog ears and nostrils with vicious strokes of his thoughts.
The Dog-shape was out. Absolutely. Such appalling sharpness of senses might be fine for a Hunter such as Ger—he probably gloried in them. But another moment of such impressions would have driven Pid the Pilot mad.
What now? He lay in the bush and thought about it, while gradually his mind threw off the last effects of the dizzying sensory assault.
He looked at the gate. The Men standing there evidently hadn't noticed his fiasco. They were looking in another direction.
... a Man?
Well, it was worth a try.
Studying the Men at the gate, Pid carefully shaped himself into a facsimile—a synthesis, actually, embodying one characteristic of that, another of this.
He emerged from the side of the bush opposite the gate, on his hands and knees. He sniffed the air, noting that the smells the Man-nostrils picked up weren't unpleasant at all. In fact, some of them were decidedly otherwise. It had just been the acuity of the Dog-nostrils, the number of smells they had detected and the near- brilliance with which they had done so, that had shocked him.
Also, the sounds weren't half so devastating. Only relatively close sounds stood out. All else was an undetailed whispering.
Evidently, Pid thought, it had been a long time since Men had been Hunters.
He tested his legs, standing up and taking a few clumsy steps.
The ankle hurt. Pid curled his Man-lips and crawled back into the bush.
The Man-shape was too unspeakably clumsy. It was offensive to plod one step at a time. Body held rigidly upright. Arms wobbling. There had been a deluge of sense-impressions in the Dog-shape; there was dull, stiff, half-alive inadequacy to the Man-shape.
Besides, it was dangerous, now that Pid thought it over, as well as distasteful. He couldn't control it properly. It wouldn't look right. Someone might question him. There was too much about Men he didn't—couldn't—know. The planting of the Displacer was too important a thing for him to fumble again. Only luck had kept him from being seen during the sensory onslaught.
The Displacer in his body pouch pulsed and tugged, urging him to be on his way toward the distant reactor room.
Grimly, Pid let out the last breath he had taken with his Man-lungs, and dissolved the lungs.
What shape to take?
Again he studied the gate, the Men standing beside it, the building beyond in which was the all-important reactor.
A small shape was needed. A fast one. An unobtrusive one.
He lay and thought.
The bush rustled above him. A small brown shape had fluttered down to light on a twig. It hopped to another
