Padway explained: "Brave, treacherous, and stupid. They have nothing but unarmored infantry, who fight in a single deep column. They come whooping along, hurl a volley of throwing-axes and javelins, and close with the sword. If you can stop them by a line of reliable pikemen, or by cavalry charges, they're suckers for mounted archers. They're very numerous, but such a huge mass of infantry can't forage enough territory to keep themselves fed. So they have to keep moving or starve.
"Moreover, they're so primitive that their soldiers are not paid at all. They're expected to make their living by looting. If you can hold them in one spot long enough, they melt away by desertion. But don't underestimate their numbers and ferocity.
"Try to send agents into Burgundy to rouse the Burgunds against the Franks, who conquered them only a few years ago." He explained that the Burgunds were of East-German origin, like the Goths and Lombards, spoke a language much like theirs, and like them were primarily stockraisers. Hence they did not get on with the West-German Franks, who were agriculturists when they were not devastating their neighbors' territory.
If there was going to be more war, Padway knew one invention that would settle it definitely in the Italo-Goths' favor. Gunpowder was made of sulphur, charcoal, and saltpeter. Padway had learned that in the sixth grade. The first two were available without question.
He supposed that potassium nitrate could be obtained somewhere as a mineral. But he did not know where, or what it would look like. He could not synthesize it with the equipment at hand, even had he known enough chemistry. But he remembered reading that it occurred at the bottom of manure-piles. And he remembered an enormous pile in Nevitta's yard.
He called on Nevitta and asked for permission to dig. He whooped with joy when, sure enough, there were the crystals, looking like maple sugar. Nevitta asked him if he was crazy.
"Sure," grinned Padway. Didn't you know? I've been that way for years."
His old house on Long Street was as full of activity as ever, despite the move to Florence. It was used as Rome headquarters by the Telegraph Company. Padway was having another press set up. And now the remaining space downstairs became a chemical laboratory. Padway did not know what proportions of the three ingredients made good gunpowder, and the only way to find out was by experiment.
He gave orders, in the government's name, for casting and boring a cannon. The brass foundry that took the job was not co-operative. They had never seen such a contraption and were not sure they could make it. What did he want this tube for, a flower pot?
It took them an interminable time to get the pattern and core made, despite the simplicity of the thing. The first one they delivered looked all right, until Padway examined the breach end closely. The metal here was spongy and pitted. The gun would have blown up the first time it was fired.
The trouble was that it had been cast muzzle down. The solution was to add a foot to the length of the barrel, cast it muzzle up, and saw off the last foot of flawed brass.
His efforts to produce gunpowder got nowhere. Lots of proportions of the ingredients would burn beautifully when ignited. But they did not explode. He tried all proportions; he varied his method of mixing. Still all he got was a lively sizzle, a big yellow flame, and a stench. He tried packing the stuff into improvised firecrackers. They went fuff. They would not go bang.
Perhaps he had to touch off a large quantity at once, more tightly compressed yet. He pestered the foundry daily until the second cannon appeared.
Early next morning he and Fritharik and a couple of helpers mounted the cannon on a crude carriage of planks in a vacant space near the Viminal Gate. The helpers had previously piled up a sandhill for a target, thirty feet from the gun.
Padway rammed several pounds of powder down the barrel, and a cast-iron ball after it. He filled the touch-hole.
He said in a low voice: "Fritharik, give me that candle. Now get back everybody. Way over there, and lie down. You too, Fritharik."
"Never!" said Fritharik indignantly. "Desert my lord in the hour of danger? I should say not!"
"All right, if you want to chance being blown to bits. Here goes."
Padway touched the candle flame to the touch-hole.
The powder sizzled and sparkled.
The gun went pfoomp! The cannon-ball hopped from the muzzle, thumped to earth a yard away, rolled another yard, and stopped.
Back went the beautiful shiny new gun to Padway's house, to be put in the cellar with the clock.
In the early spring, Urias appeared in Rome. He explained that he'd left the military academy in the hands of subordinates, and was coming down to see about raising a milita force of Romans, which had been another of Padway's ideas. But he had an unhappy, hangdog air that made Padway suspect that that wasn't the real reason.
To Padway's leading questions he finally burst out: "Excellent Martinus, you'll simply have to give me a command somewhere away from Ravenna. I can't stand it any longer."
Padway put his arm around Urias' shoulders. "Come on, old man, tell me what is bothering you. Maybe I can help."
Urias looked at the ground. "Uh . . . well . . . that is—Look here, just what is the arrangement between you and Mathaswentha?"
"I thought that was it. You've been seeing her, haven't you?"
"Yes, I have. And if you send me back there, I shall see her some more in spite of myself. Are you and she betrothed, or what?"
"I did have some such idea once." Padway put on the air of one about to make a great sacrifice. "But, my friend, I wouldn't stand in the way of anybody's happiness. I'm sure you're much better suited to her than I. My work keeps me too busy to make a good husband. So if you want to sue for her hand, go to it, with my blessing."
"You mean that?" Urias jumped up and began pacing the floor, fairly beaming. "I . . . I don't know how to thank you . . . it's the greatest thing you could do for me . . . I'm your friend for Me—"
"Don't mention it; I'm glad to help you out. But now that you're down here, you might as well finish the job you came to do."
"Oh," said Urias soberly. "I suppose I ought to, at that. But how shall I press my suit, then?"
"Write her."
"But how can I? I don't know the pretty phrases. In fact, I've never written a love letter in my life."
"I'll help you out with that, too. Here, we can start right now." Padway got out writing materials, and they were presently concocting a letter to the princess. "Let's see," said Padway reflectively, "we ought to tell her what her eyes are like."
"They're just like eyes, aren't they?"
"Of course, but in this business you compare them to the stars and things."
Urias thought. "They're about the color of a glacier I once saw in the Alps."
"No, that wouldn't do. It would imply that they were as cold as ice."
"They also remind you of a polished sword blade."
"Similar objection. How about the northern seas?"
"Hm-m-m. Yes, I think that would do, Martinus. Gray as the northern seas."
"It has a fine poetic ring to it."
"So it has. Northern seas it shall be, then." Urias wrote slowly and awkwardly.
Padway said: "Hey, don't bear down so hard with that pen. You'll poke a hole in that paper."
As Urias was finishing the letter, Padway clapped on his hat and made for the door.
"Hal," said Urias, "what's your hurry?"
Padway grinned. "I'm just going to see some friends; a family named Anicius. Nice people. I'll introduce you to them some day when you're safely sewed up."
Padway's original idea had been to introduce a mild form of selective conscription, beginning with the city of Rome and requiring the draftees to report for weekly drill. The Senate, which at this time was a mere municipal council, balked. Some of them disliked or distrusted Padway. Some wanted to be bribed.