"Hold your horses!" Sam said. "Where would you get all the tremendous amounts of electrical power you'd need? Would we have to build our own Niagara Falls to carry along with us?"

O'Brien was a short, slight youth with a plume of almost orange hair and a face with features so delicate he looked effeminate. He had a crooked smile which managed nevertheless to be charming. He said, "It's available everywhere up and down The River."

He pointed at the mushroom shape of the nearest grailstone. "Three times a day, those stones output an enormous electrical power. What's to prevent us from hooking up power lines to a number of them and storing the discharges to run the boat's motors?"

Sam goggled for a moment, then said, "Strike me dumb! No, that's a redundant phrase. I am dumb! Right before my eyes, and I never thought of it! Of course!"

Then he slitted his eyes and lowered his thick tangled eyebrows. "How in hell could you store all that energy? I don't know much about electricity, but I do know that you'd need a storage battery taller than the Eiffel Tower or a capacitor the size of Pike's Peak."

O'Brien shook his head. "I thought so, too, but this fellow, he's a mulatto, half Afrikaans, half Zulu, Lobengula Van Boom, he said that if he had the materials, he could build a storage device—a batacitor, he called it—a ten-meter cube, that could hold ten megakilowatts and feed it out a tenth of a volt per second or all at once.

"Now, if we can mine the bauxite and make aluminum wire, and there are many problems in doing even that, we can use the aluminum in circuits and electrical motors. Aluminum isn't as efficient as copper, but we don't have copper, and aluminum will do the job."

Sam's fury and frustration disappeared. He grinned, snapped his fingers, and made a little leap into the air. "Find van Boom! I want to talk to him!"

He puffed away, the end of his cigar as glowing as the images in his mind. Already, the great white paddle-wheeler was steaming (no, electrificating?) up The River with Sam Clemens in the pilothouse, Sam Clemens wearing a Riverboat captain's cap of Riverdragon leather on his head, Sam Clemens, captain of the fabulous, the unique paddle-wheeler, the great vessel churning on the start of its million mile-plus journey. Never such a boat, never such a River, never such a trip! Whistles blowing, bells clanging, the crew made up of the great and neargreat men and women of all time. From mammoth subhuman Joe Miller of 1,000,000 B.C. to the delicatebodied but vast-brained scientist of the late twentiethcentury.

Von Richthofen brought him back to the immediate reality.

"I'm ready to start digging for the iron. But what do you intend to do about Joe?"

Sam groaned and said, "I can't make up my mind what to do. I'm as tense as a diamond cutter before he makes the first tap. One wrong thing, and the Kohinoor shatters. Okay, okay! I'll send Joe. I have to take a chance. But being without him makes me feel as helpless as a honeydipper without a bucket, a banker on Black Friday. I'll tell Bloodaxe and Joe, and you can start your crew. Only we ought to have a ceremony. We'll all have a snort, and I'll dig the first shovelful."

A few minutes later, his stomach warmed by a big shot of Bourbon, cigar in mouth, his speech finished, Sam started to dig. The bamboo shovel had a sharp edge, but the grass was so tough and thick that it was necessary to use the shovel as a machete. Sweating, swearing, declaring that he had always hated physical exertion and was not cut out to be a ditch-digger, Sam chopped away the grass. On driving the now-dulled shovel into the earth, Sam found he could not bring up even a half shovelful. It would be necessary to hack away at the grass and the dirt between.

"By the great horn spoon!" he said, flinging the shovel down on the ground. "Let some peasant who's cut out for this drudgery do it! I'm a brain-worker!"

The crowd laughed and set to work with flint and bamboo knives and flint axes. Sam said, "If that iron is ten feet down, it'll take us ten years to find it. Joe, you'd better bring back plenty of flint, otherwise we're done for."

"Do I have to go?" Joe Miller said. "I'll mithth you, Tham."

"You gotta go, as all men do," Sam said. "Don't worry about me."

During the next three days, a hole ten feet across and one foot deep was made. Von Richthofen organized the teams so that a new one replaced the previous crew every fifteen minutes. There was no lack of fresh and strong diggers, but delays were caused by the flaking of new flint tools and the making of new bamboo tools. Bloodaxe growled about the damage to the axes and knives, saying that if they were to be attacked, the stone weapons could not cut through the skin of a baby. Clemens begged him for the dozenth time to be allowed to use the steel ax, and Bloodaxe refused.

"If Joe were here, I'd have him take the ax away from him," Clemens said to Lothar. "And where is Joe, anyway? He should be back by now, empty-handed or bearing gifts."

"I think we ought to send somebody in a dugout to find out," von Richthofen said. "I'd go myself, but I think you still need me around to protect you from Bloodaxe."

"If something's happened to Joe, we'll both need protection," Sam said. "All right, that Pathan, Abdul, can be our spy. He could wriggle unnoticed through a basket of rattlesnakes."

At dawn, two days later, Abdul paddled in. He woke Sam and Lothar, who were sleeping in the same hut for mutual protection. In broken English, he explained that Joe Miller was tied up in a strongly built bamboo cage. Abdul had tried to get a chance to free Joe, but the cage had an around-the-clock guard.

The Vikings had been greeted with friendliness and sympathy. The chief of the region had seemed surprised that his flint for their iron would be a very good trade. He had held a big party to celebrate the agreement and had given his guests as much liquor and dreamgum as they wished. The Norse had been overcome while they snored drunkenly. Joe was asleep but had awakened while being tied up. With bare hands only, he had killed twenty men and injured fifteen before the chief had half stunned him with a dub against the back of his neck. The blow would have broken anybody else's neck; it just reduced his fighting ability enough to permit men to swarm over him and restrain him while the chief hit him twice over the head.

"The chief knows Joe is a mighty warrior," Abdul said. "Greater than Rustam himself. I overheard some men talking, and they said their chief plans to use Joe as a hostage. He wants to become partners in the iron mine. If refused, he will not kill Joe but will make a slave out of him, although I doubt he can do that. He'll attack us, kill us, get the iron for himself.

"He can do it. He's building a huge fleet, many small ships carrying forty men each, hastily put together but serviceable to transport his army. He'll make an all-out attack with warriors armed with flint weapons, bows and arrows and heavy war-boomerangs." "And who is this would-be Napoleon?" Sam said.

"His men called him King John. They say that he ruled over England when men wore armor and fought with swords. In the time of Saladin. His brother was a very famous warrior, Richard the Lion-Hearted."

Sam cursed and said, "John Lackland! The blackhearted pussyfooting Prince John! So rotten that the English swore never again to have a king named John! I'd sooner have a scoundrel like Leopold of Belgium or Jim Fiske after my hide!"

Thirty minutes later, Sam was shoved into an even deeper gloom. This time, the message came by word-ofmouth grapevine. Thirty miles downRiver, a huge fleet was sailing toward them. This consisted of sixty large single-masters, each carrying forty warriors. The leader of the armada was a king of an area which had been just outside the destruction caused by the meteorite. His name was Joseph Maria von Radowitz.