But before he touched it, it began ringing.

After a moment's paralysis, he picked up the receiver. It was his wife's voice that came shrilly over the wires.

"Henry!" she cried. "Is that you?"

"h.e.l.lo, Sally," he said with stiff lips. Her voice as she answered seemed to come nearer and go farther away, and he realized that his hand holding the instrument was shaking.

"Henry, you've got to come home right now. Harry's sick. He's got a high fever, and he's been asking for you."

He moistened his lips and said, "I'll be right home. I'll take a taxi."

"Hurry!" she exclaimed. "He's been saying queer things. I think he's delirious." She paused, and added, "And it's all the fault of that microscope _you_ bought him!"

"I'll be right home," he repeated dully.

His wife was not at the door to meet him; she must be upstairs, in Harry's bedroom. He paused in the living room and glanced toward the table that bore the microscope; the black, gleaming thing still stood there, but he did not see any of the slides, and the papers were piled neatly together to one side. His eyes fell on the fish bowl; it was empty, clean and shining. He knew Harry hadn't done those things; that was Sally's neatness.

Abruptly, instead of going straight up the stairs, he moved to the table and looked down at the pile of papers. The one on top was almost blank; on it was written several times: rty34pr ... rty34pr.... His memory for figure combinations served him; he remembered what had been written on another page: "rty34pr is the pond."

That made him think of the pond, lying quiescent under its green sc.u.m and trailing plants at the end of the garden. A step on the stair jerked him around.

It was his wife, of course. She said in a voice sharp-edged with apprehension: "What are you doing down here? Harry wants you. The doctor hasn't come; I phoned him just before I called you, but he hasn't come."

He did not answer. Instead he gestured at the pile of papers, the empty fish bowl, an imperative question in his face.

"I threw that dirty water back in the pond. It's probably what he caught something from. And he was breaking himself down, humping over that thing. It's _your_ fault, for getting it for him. Are you coming?" She glared coldly at him, turning back to the stairway.

"I'm coming," he said heavily, and followed her upstairs.

Harry lay back in his bed, a low mound under the covers. His head was propped against a single pillow, and his eyes were half-closed, the lids swollen-looking, his face hotly flushed. He was breathing slowly as if asleep.

But as his father entered the room, he opened his eyes as if with an effort, fixed them on him, said, "Dad ... I've got to tell you."

Mr. Chatham took the chair by the bedside, quietly, leaving his wife to stand. He asked, "About what, Harry?"

"About-things." The boy's eyes shifted to his mother, at the foot of his bed. "I don't want to talk to her. _She_ thinks it's just fever. But you'll understand."

Henry Chatham lifted his gaze to meet his wife's. "Maybe you'd better go downstairs and wait for the doctor, Sally."

She looked hard at him, then turned abruptly to go out. "All right," she said in a thin voice, and closed the door softly behind her.

"Now what did you want to tell me, Harry?"

"About _them_ ... the rotifers," the boy said. His eyes had drifted half-shut again but his voice was clear. "They did it to me ... on purpose."

"Did _what_?"

"I don't know.... They used one of their cultures. They've got all kinds: beds of germs, under the leaves in the water. They've been growing new kinds, that will be worse than anything that ever was before.... They live so fast, they work so fast."

Henry Chatham was silent, leaning forward beside the bed.

"It was only a little while, before I found out they knew about me. I could see them through my microscope, but they could see me too.... And they kept signaling, swimming and turning.... I won't tell you how to talk to them, because n.o.body ought to talk to them ever again. Because they find out more than they tell.... They know about us, now, and they hate us. They never knew before-that there was anybody but them.... So they want to kill us all."

"But why should they want to do that?" asked the father, as gently as he could. He kept telling himself, "He's delirious. It's like Sally says, he's been wearing himself out, thinking too much about-the rotifers. But the doctor will be here pretty soon, the doctor will know what to do."

"They don't like knowing that they aren't the only ones on Earth that can think. I expect people would be the same way."

"But they're such little things, Harry. They can't hurt us at all."

The boy's eyes opened wide, shadowed with terror and fever. "I told you, Dad-They're growing germs, millions and billions of them, _new_ ones....

And they kept telling me to take them back to the pond, so they could tell all the rest, and they could all start getting ready-for war."

He remembered the shapes that swam and crept in the green water gardens, with whirling cilia and great, cold, glistening eyes. And he remembered the clean, empty fish bowl in the window downstairs.

"Don't let them, Dad," said Harry convulsively. "You've got to kill them all. The ones here and the ones in the pond. You've got to kill them good-because they don't mind being killed, and they lay lots of eggs, and their eggs can stand almost anything, even drying up. _And the eggs remember what the old ones knew._"

"Don't worry," said Henry Chatham quickly. He grasped his son's hand, a hot limp hand that had slipped from under the coverlet. "We'll stop them. We'll drain the pond."

"That's swell," whispered the boy, his energy fading again. "I ought to have told you before, Dad-but first I was afraid you'd laugh, and then-I was just ... afraid...."

His voice drifted away. And his father, looking down at the flushed face, saw that he seemed asleep. Well, that was better than the sick delirium-saying such strange, wild things-

Downstairs the doctor was saying harshly, "All right. All right. But let's have a look at the patient."

Henry Chatham came quietly downstairs; he greeted the doctor briefly, and did not follow him to Harry's bedroom.

When he was left alone in the room, he went to the window and stood looking down at the microscope. He could not rid his head of strangeness: A window between two worlds, our world and that of the infinitely small, a window that looks both ways.

After a time, he went through the kitchen and let himself out the back door, into the noonday sunlight.

He followed the garden path, between the weed-grown beds of vegetables, until he came to the edge of the little pond. It lay there quiet in the sunlight, green-sc.u.mmed and walled with stiff rank gra.s.s, a lone dragonfly swooping and wheeling above it. The image of all the stagnant waters, the fertile breeding-places of strange life, with which it was joined in the end by the tortuous hidden channels, the oozing pores of the Earth.

And it seemed to him then that he glimpsed something, a hitherto unseen miasma, rising above the pool and darkening the sunlight ever so little.

A dream, a shadow-the shadow of the alien dream of things hidden in smallness, the dark dream of the rotifers.

The dragonfly, having seized a bright-winged fly that was sporting over the pond, descended heavily through the sunlit air and came to rest on a broad lily pad. Henry Chatham was suddenly afraid. He turned and walked slowly, wearily, up the path toward the house.

*END*