metal tongs, he carefully moved the glowing metal strip to a piece of wood of the same cylindrical shape as the metal objects the boys had seen near the wall. The blacksmith placed the strip along the length of the wood then began to bash the metal until its flat shape was transformed into the curve of the blackened wooden mold.
Tomasso nodded his approval and helped the blacksmith add previously curved lengths of metal to the wooden cylinder until the entire piece of wood disappeared beneath iron casing. Eight glowing metallic rings held the metal plates in place. Using every bit of strength his massive arms, the blacksmith lifted his metal-and-wood creation off of the workbench and threw the entire thing into the furnace. Tomasso slapped him on the back and grinned. They turned to get a drink of water but stopped in surprise as they saw the two young men watching them from the doorway.
“Ah, Sir Rudyard’s son and his friend,” he said, switching to accented Gaelic. “I am glad you dropped by. Come in! Join us in a drink of water.”
The boys stepped through the doorway and followed the two men to a water barrel. Tomasso dipped the wooden ladle into the cool water and passed it around for all to enjoy. He said something in Italian to the blacksmith, the boys picking up their names, as well as Angus’s father and Prince Henry. Looking back at them, Tomasso switched again to Gaelic.
“Connor and Angus, you remember Master Iacoe from last night. He is one of the finest blacksmiths in all of Venice. He has travelled this huge distance to Kirkwall to help Prince Henry with his quest.”
They shook hands. The boys ignored their blackened palms.
“What are you making in the furnace?” asked Angus.
“Ah, that glowing creation will soon become Kirkwall’s newest cannon.”
“Are those two metal things on the castle wall cannons as well?” asked Connor.
Tomasso nodded. “Yes, those are finished cannons. They are the first ones we have made for Kirkwall that are of a high enough quality to be used in battle.”
Angus looked outside the door, confused. “What exactly do they do?”
Tomasso lowered his voice and leaned in, waving the boys in closer. “Those cannons are the greatest weapon man has ever created!”
“You throw them at people?” asked Angus incredulously.
Tomasso laughed. “No, my friends. You don’t throw a cannon. First, let me explain how a cannon is made. Did you see Tomasso place the newly-made cannon into the furnace?”
The boys nodded.
“Well, the key now is to burn away the log that is giving the cannon its shape. The cannon needs to be hollow.”
The boys looked inside the furnace. Already the cylindrical log was engulfed in flames within the confines of the glowing metal casing. Tomasso waved them over to the corner of the shop. Sitting on the table was another cannon, cold and black. Both ends were open. He picked up a heavy metal ball and passed it to the boys.
“How would you like to be hit with one of these iron balls? It would hurt, no? Would you believe that this cannon could fire a ball with enough force to shatter a hole through the hull of a ship?”
The boys looked at each other in disbelief.
“How could such a small contraption throw a ball this heavy at such a speed?” asked Connor. “Prince Henry’s largest catapult couldn’t complete such a feat!”
“True,” agreed Tomasso, “you would need about half an army to prime then release a catapult stone in order to reach the same velocity. But with a cannon such as this, you two could launch a ball at such a high speed, all by yourselves.”
Connor frowned. Such a claim could only be made by a lunatic or by a spell-wielding sorcerer.
“How could two people have the strength to do such a thing with only a small metal device?” asked Angus, pointing at the cannon before him.
“Ah, now that’s the trick, isn’t it? Humans simply don’t have the muscle power to do it. So we must find another, even greater source of energy for the task.”
Tomasso stepped back and looked down at three large sacks that were lined up against the wall. The boys followed his gaze. Together they stepped over to look at the sacks. Each one contained a different coloured powder: yellow, white and black. Tomasso stuck his hand in the white powder and let it run through his fingers as if he were playing with sand on a beach.
“Have you boys ever heard of the Great Eastern Empire?”
Angus nodded. “My father has told us of it. A distant emperor has a kingdom that is greater than all of Europe put together. Father has taught Connor and me some of the fighting techniques used by the empire.”
Tomasso grinned with admiration. “Then you are more enlightened than most Europeans. There are many legends regarding the Eastern Empire. Some say that there are entire cities made of gold. Others talk of his single navy being many times larger than all of the ships of Europe put together! They have even invented objects that are as large as this shop but can float in the air on a summer breeze. But of all of the Empire’s many amazing inventions, I consider this to be its greatest of all.”
Tomasso pointed to the bags, and the boys looked at each other, confused.
“This simple powder is greater than a flying building?” asked Connor incredulously. “How can that be?”
“Listen carefully to the story of this simple powder. The Templar Order first heard of the miracle powder over two hundred years ago. The powder was mentioned through the boasts of visitors to Jerusalem. The Persians, of a kingdom near the Holy Land and controlled by the Great Khan’s cousin, described a powder that was explosive and could send special arrows called rockets hurtling high up into the clouds.”
“The clouds?” the boys said together, in disbelief.
Tomasso nodded. “Amazing, but apparently true. The Jerusalem Templars knew how important it was to discover the secret of this powerful substance. Through their friendships in the Holy Lands, they were able to secretly purchase a small quantity from an eastern trader. They then transported the substance to a team of trusted Italian scientists. It was they who finally unravelled the secrets of the powder.”
“And what was it?” asked Angus, excitedly.
Tomasso pointed again at the bags. “Three different ingredients . . . The black powder is simple charcoal, but ground into a fine dust. The yellow powder is sulfur that can be easily mined from the ground. It is the third substance, however, that was the most mysterious ingredient. This, in my hand, boys, is saltpeter.”
“It looks like table salt,” said Connor, staring closely at the plain-looking substance.
“This special salt is created by decomposing then evaporating animal urine. The location of evaporation is very important. The land on which the urine is spread must have an abundance of nitrates in the soil. If all of those conditions are met, the water within the animal waste will evaporate and a white salt will remain on the ground that can be harvested and purified. Follow those directions, and you will have made saltpeter.”
“And that’s it?” asked Angus,
