bothered to warn 'em. The dust started settlin' all over your ancestors. In about a week, there were sores and blisters on their backs. The red hair dropped off. When it grew back, it was gray.

"The scientists got real excited when they heard about it, 'cause they wanted to see how horrible they could make Atomic Bomb. So, they shipped fifty-nine cattle up to Oak Ridge. That was a Government town, a hundred miles southwest of here, where they made some of the stuff to put in Atomic Bomb. The University of Tennessee was runnin' an experimental farm there. They had donkeys, and pigs, and chickens, and other animals that they exposed to radioactivity. Then they killed 'em and cut 'em up to see what had happened. I know it's gruesome, but that's how it was.

"The awful fact is, the scientists slaughtered more than half that original Atohmy herd for experiments. Some of the rest, they—uh—married. Wanted to see if the calves had two heads, or something; if radioactivity had speeded up the mutation rate.

"Back then, they didn't understand much about mutation. Some claimed a little radioactivity would cause it, some said a whole lot, and some said it wouldn't hurt a bit."

"Whaa mootyaaonn?" asked the calf which was not yet assured of the extinction of Atomic Bomb.

"Well, you-all are all mutations. I've told you how life starts from one cell. This cell has thread-like things in it called chromosomes, and the chromosomes are made up of things called genes. Mutations, sort of unexpected changes, can take place in either the chromosomes or the genes. You see, when this one cell starts dividing, every gene makes a copy of itself; but, sometimes, the copy is a little different from the original. Lots of things, like x-rays and ultraviolet rays, heat, chemicals, disease, can cause this. Radioactivity had caused mutation in some experiment, so the scientists were anxious to see what happened with these cattle.

"Genes determine the way an animal develops. Two mutant genes can start reactions that end up as a man with one leg, or maybe as a bull with the intelligence of an eight-year-old man. Lots of mutations are recessive. They may be carried along for generations. But, when two like mutant genes come together in reproduction, the animal is bound to be something different, the way you eleven calves are.

"Now. The scientists watched the Atohmy cattle for fifteen or twenty years, and nothin' much happened. They started sayin' radioactivity wasn't dangerous, and a man could walk into a place right after Atomic Bomb went off, and it wouldn't matter. They should be here to see the mess in Japan today. All the time, though, I think the cattle were changing. It may have been in little things like the length of hair, or the shape of an eyeball, or the curve of a horn, so the scientists couldn't tell without they made exact measurements all the time.

"Then, a bull-calf was born. He had shaggy black hair, and his horns grew in a spiral like a ram's. Some scientists said, 'I told you so! It speeded the mutation rate!'

"Others said, 'He's a natural mutation, or else, a throw-back to prehistoric wild cattle. It happens in every breed. Atomic Bomb had nothing to do with it.'

"They married the bull, and then they fixed to slaughter 'im to see what his insides was like. The bull fooled 'em, though. He came down with contagious pleuro-pneumonia, the first case in years, 'cause it was supposed to have been wiped out in this country away back in the Nineteenth Century. They had to cremate the bull for fear the disease would spread. Ever' one of the calves were normal Whitefaces.

"Finally, the nineteen Atohmy cattle that were left were put up for sale. My great-grandfather, Cary McPheeter, bought 'em and shipped 'em here to Bays Mountain. He's the man started this farm where there was nothin' but rattlesnakes, and trees, and rocks."

"Whyy theyea selll um?" a red roan calf interrupted.

"Well, they sold 'em 'cause Oak Ridge had been condemned. That was several years after the German Civil War. It was peace time, for a change, and folks were sick of Atomic Bomb. Anyhow, new, modern plants for makin' the stuff had been built in secret places a lot easier to defend. The women were cryin' for more automatic kitchens, so the Bureau of Interior Hydro-electric Power (that's the name Federal Power, Inc., went by then) put another dam across the Clinch River below Norris. Bush Lake covered up Oak Ridge.

"There wasn't much mutation, except for color, in you Atohmy cattle, till seven years ago when your pappy, Moe, was born. I remember—"

A hoarse excited voice shouted from a distance. "Thrill party!" it cried. "Thrill party!"

Stonecypher leaped off the stump, stamped his right foot to restore circulation, and yelled on the run, "That's all today! Stay under the trees!"

He loped along the pasture fence and across the makeshift target range. Two tenants, Teddy and Will, stood on the dirt heap with pitchforks in their hands. Over Bay Knob, an old Model 14 butterflier hovered on vibrating wings. Sloppy white letters on the sides of the aircraft spelled such slang expressions as, "Flash the MAGNETS," "SupercOlossalSoniC Flap ship," and "Redheads amble OTHer canop."

An impossible number of middleschool-age boys bulged from the cabin windows. Methodically, they dumped trash and garbage over the transmitter station ruins. The butterflier wheeled and flapped over the pasture. Red clover bent and writhed in the artificial wind from the ornithopter wings. Cows bawled and ran wild. Calves fell over each other.

Stonecypher jumped the fence. He wrested the revolver from the holster. "Clear out, or I'll shoot!" he howled.

Voices spilled from the butterflier. "He got a handgun!"

"Dis ain't legal!"

"Whatcha say, tall, bones, and ugly?"

Stonecypher aimed the Magnum at the shaven head in the pilot's seat. The boys looked faint. Agitated air thundered as the butterflier lifted straight up two hundred feet and glided away in the direction of Surgoinsville Dam.

Teddy and Will stood by with pitchforks unrelaxed. Will spat a globule of tobacco juice. "The thangs these here psychologists git made law!" he sneered. "You want me to make out a Thrill Damage Claim?"

"No, Will," Stonecypher said, "just deduct it from taxes."

Teddy looked at the revolver and said, "Ever'body oughta take guns to them crazy youngin's. Reckon you'll git into trouble?"

"No. It's an empty antique. That's legal. You guys did all right. Let the calves back in, huh?"

The tenants left by the gate, and, with a minimum of driving, urged the calves into the pasture. Stonecypher watched the men pass through the grove. Although the tenants undoubtedly recognized the peculiarities of the calves, they never mentioned them. Since the late 1700's, through Revolution, Civil War, automobile, the Department of Internal Revenue, the multiple bureaus that had controlled the Lakes, the Moon rocket, and the expedition to Pluto, these people had remained suspiciously interested in strangers, suspicious of indoor plumbing, doubtful of the Government, quick-tempered, and as immovable as Chimney Top. They had exchanged little except log and frame houses for concrete. The tenants, not really tenants, had been squatting on Bays Mountain when Cary McPheeter bought the farm; and there they stayed.

Stonecypher vaulted the fence. Catriona, with hands firmly planted on hips, stood in the dry pond. Stonecypher said, "If I just knew what these thrill parties think they're up to, it might help."

Catriona shook her head of red-yellow hair. "Nevah mind them. Ah told you to practice shootin', but the minute ah turn mah back, you run off and staht teachin' those calves! You've got to practice, Stony! You've nevah done any shootin', and L. Dan's killed ten people. Ah—"

"Watch the