They never did discover whose fault it was. Fannia pointed out that if Donnaught had had the brains of an ox, as well as the build, he would have remembered to check the tanks. Donnaught, although twice as big as him, wasn’t quite as fast with an insult. He intimated, after a little thought, that Fannia’s nose might have obstructed his reading of the fuel gauge.

This still left them twenty light-years from Thetis, with a cupful of transformer fuel in the emergency tank.

“All right,” Fannia said presently. “What’s done is done. We can squeeze about three light-years out of the fuel before we’re back on atomics. Hand me The Galactic Pilot--unless you forgot that, too.”

Donnaught dragged the bulky microfilm volume out of its locker, and they explored its pages.

The Galactic Pilot told them they were in a sparse, seldom-visited section of space, which they already knew. The nearest planetary system was Hatterfield; no intelligent life there. Sersus had a native population, but no refueling facilities. The same with Illed, Hung and Porderai.

“Ah-ha!” Fannia said. “Read that, Donnaught. If you can read, that is.”

“Cascella,” Donnaught read, slowly and clearly, following the line with a thick forefinger. “Type M sun. Three planets, intelligent (AA3C) human-type life on second. Oxygen-breathers. Non-mechanical. Religious. Friendly. Unique social structure, described in Galactic Survey Report 33877242. Population estimate: stable at three billion. Basic Cascellan vocabulary taped under Cas33b2. Scheduled for resurvey 2375 A.D. Cache of transformer fuel left, beam coordinate 8741 kgl. Physical descript: Unocc. flatland.”

“Transformer fuel, boy!” Fannia said gleefully. “I believe we will get to Thetis, after all.” He punched the new direction on the ship’s tape. “If that fuel’s still there.”

“Should we read up on the unique social structure?” Donnaught asked, still poring over The Galactic Pilot.

“Certainly,” Fannia said. “Just step over to the main galactic base on Earth and buy me a copy.”

“I forgot,” Donnaught admitted slowly.

“Let me see,” Fannia said, dragging out the ship’s language library, “Cascellan, Cascellan ... Here it is. Be good while I learn the language.” He set the tape in the hypnophone and switched it on. “Another useless tongue in my overstuffed head,” he murmured, and then the hypnophone took over.

Coming out of transformer drive with at least a drop of fuel left, they switched to atomics. Fannia rode the beam right across the planet, locating the slender metal spire of the Galactic Survey cache. The plain was no longer unoccupied, however. The Cascellans had built a city around the cache, and the spire dominated the crude wood-and-mud buildings.

“Hang on,” Fannia said, and brought the ship down on the outskirts of the city, in a field of stubble.

“Now look,” Fannia said, unfastening his safety belt. “We’re just here for fuel. No souvenirs, no side-trips, no fraternizing.”

Through the port, they could see a cloud of dust from the city. As it came closer, they made out figures running toward their ship.

“What do you think this unique social structure is?” Donnaught asked, pensively checking the charge in a needler gun.

“I know not and care less,” Fannia said, struggling into space armor. “Get dressed.”

“The air’s breathable.”

“Look, pachyderm, for all we know, these Cascellans think the proper way to greet visitors is to chop off their heads and stuff them with green apples. If Galactic says unique, it probably means unique.”

“Galactic said they were friendly.”

“That means they haven’t got atomic bombs. Come on, get dressed.” Donnaught put down the needler and struggled into an oversize suit of space armor. Both men strapped on needlers, paralyzers, and a few grenades.

“I don’t think we have anything to worry about,” Fannia said, tightening the last nut on his helmet. “Even if they get rough, they can’t crack space armor. And if they’re not rough, we won’t have any trouble. Maybe these gewgaws will help.” He picked up a box of trading articles--mirrors, toys and the like.

Helmeted and armored, Fannia slid out the port and raised one hand to the Cascellans. The language, hypnotically placed in his mind, leaped to his lips.

“We come as friends and brothers. Take us to the chief.”

The natives clustered around, gaping at the ship and the space armor. Although they had the same number of eyes, ears and limbs as humans, they completely missed looking like them.

“If they’re friendly,” Donnaught asked, climbing out of the port, “why all the hardware?” The Cascellans were dressed predominantly in a collection of knives, swords and daggers. Each man had at least five, and some had eight or nine.

“Maybe Galactic got their signals crossed,” Fannia said, as the natives spread out in an escort. “Or maybe the natives just use the knives for mumblypeg.”

The city was typical of a non-mechanical culture. Narrow, packed-dirt streets twisted between ramshackle huts. A few two-story buildings threatened to collapse at any minute. A stench filled the air, so strong that Fannia’s filter couldn’t quite eradicate it. The Cascellans bounded ahead of the heavily laden Earthmen, dashing around like a pack of playful puppies. Their knives glittered and clanked.

The chief’s house was the only three-story building in the city. The tall spire of the cache was right behind it.

“If you come in peace,” the chief said when they entered, “you are welcome.” He was a middle-aged Cascellan with at least fifteen knives strapped to various parts of his person. He squatted cross-legged on a raised dais.

“We are privileged,” Fannia said. He remembered from the hypnotic language lesson that “chief” on Cascella meant more than it usually did on Earth. The chief here was a combination of king, high priest, deity and bravest warrior.

“We have a few simple gifts here,” Fannia added, placing the gewgaws at the king’s feet. “Will his majesty accept?”

“No,” the king said. “We accept no gifts.” Was that the unique social structure? Fannia wondered. It certainly was not human. “We are a warrior race. What we want, we take.”

Fannia sat cross-legged in front of the dais and exchanged conversation with the king while Donnaught played with the spurned toys. Trying to overcome the initial bad impression, Fannia told the chief about the stars and other worlds, since simple people usually liked fables. He spoke of the ship, not mentioning yet that it was out of fuel. He spoke of Cascella, telling the chief how its fame was known throughout the Galaxy.

“That is as it should be,” the chief said proudly. “We are a race of warriors, the like of which has never been seen. Every man of us dies fighting.”

“You must have fought some great wars,” Fannia said politely, wondering what idiot had written up the galactic report.

“I have not fought a war for many years,” the chief said. “We are united now, and all our enemies have joined us.”

Bit by bit, Fannia led up to the matter of the fuel.

“What is this ‘fuel’?” the chief asked, haltingly because there was no equivalent for it in the Cascellan language.

“It makes our ship go.”

“And where is it?”

“In the metal spire,” Fannia said. “If you would just allow us--”

“In the holy shrine?” the chief exclaimed, shocked. “The tall metal church which the gods left here long ago?”

“Yeah,” Fannia said sadly, knowing what was coming. “I guess that’s it.”

“It is sacrilege for an outworlder to go near it,” the chief said. “I forbid it.”

“We need the fuel.” Fannia was getting tired of sitting cross-legged. Space armor wasn’t built for complicated postures. “The spire was put here for such emergencies.”

“Strangers, know that I am god of my people, as well as their leader. If you dare approach the sacred temple, there will be war.”

“I was afraid of that,” Fannia said, getting to his feet.

“And since we are a race of warriors,” the chief said, “at my command, every fighting man of the planet will move against you. More will come from the hills and from across the rivers.”

Abruptly, the chief drew a knife. It must have been a signal, because every native in the room did the same.

Fannia dragged Donnaught away from the toys. “Look, lummox. These friendly warriors can’t do a damn thing to us. Those knives can’t cut space armor, and I doubt if they have anything better. Don’t let them pile up on you, though. Use the paralyzer first, the needler if they really get thick.”

“Right.” Donnaught whisked out and primed a paralyzer in a single coordinated movement. With weapons, Donnaught was fast and reliable, which was virtue enough for Fannia to keep him as a partner.

“We’ll cut around this building and grab the fuel. Two cans ought to be enough. Then we’ll beat it fast.”

They walked out the building, followed by the Cascellans. Four carriers lifted the chief, who was barking orders. The narrow street outside was suddenly jammed with armed natives. No one tried to touch them yet, but at least a thousand knives were flashing in the sun.

In front of the cache was a solid phalanx of Cascellans. They stood behind a network of ropes that probably marked the boundary between sacred and profane ground.

“Get set for it,” Fannia said, and stepped over the ropes.

Immediately the foremost temple guard raised his knife. Fannia brought up the paralyzer, not firing it yet, still moving forward.

The foremost native shouted something, and the knife swept across in a glittering arc. The Cascellan gurgled something else, staggered and fell. Bright blood oozed from his throat.

“I told you not to use the needler yet!” Fannia said.

“I didn’t,” Donnaught protested. Glancing back, Fannia saw that Donnaught’s needler was still holstered.

“Then I don’t get it,” said Fannia bewilderedly.

Three more natives bounded forward, their knives held high. They tumbled to the ground also. Fannia stopped and watched as a platoon of natives advanced on them.

Once they were within stabbing range of the Earthmen, the natives were slitting their own throats!

Fannia was frozen for a moment, unable to believe his eyes. Donnaught halted behind him.

Natives were rushing forward by the hundreds now, their knives poised, screaming at the Earthmen. As they came within range, each native stabbed himself, tumbling on a quickly growing pile of bodies. In minutes the Earthmen were surrounded by a heap of bleeding Cascellan flesh, which was steadily growing higher.

“All right!” Fannia shouted. “Stop it.” He yanked Donnaught back with him, to profane ground. “Truce!” he yelled in Cascellan.

The crowd parted and the chief was carried through. With two knives clenched in his fists, he was panting from excitement.

“We have won the first battle!” he said proudly. “The might of our warriors frightens even such aliens as yourselves. You shall not profane our temple while a man is alive on Cascella!”

The natives shouted their approval and triumph.

The two aliens dazedly stumbled back to their ship.

“So that’s what Galactic meant by ‘a unique social structure, ‘“ Fannia said morosely. He stripped off his armor and lay down on his bunk. “Their way of making war is to suicide their enemies into capitulation.”

“They must be nuts,” Donnaught grumbled. “That’s no way to fight.”

“It works, doesn’t it?” Fannia got up and stared out a porthole. The sun was setting, painting the city a charming red in its glow. The beams of light glistened off the spire of the Galactic cache. Through the open doorway they could hear the boom and rattle of drums. “Tribal call to arms,” Fannia said.