At the king's order the scribe at once handed the necessary materials to Roger, who in three or four minutes dashed off a spirited sketch of a horse, with a rider upon his back. The king was greatly struck with the representation. The Aztecs possessed the art of copying objects with a fair amount of accuracy, but the figures were stiff and wooden, without the slightest life or animation. To the king, then, this little sketch appeared almost supernatural. Here was before him an animal which looked alive, as if already in movement. He passed it to those next to him, and continued the conversation.
"And the men fight on the backs of those animals?"
"The nobles and a certain portion of the troops fight on horseback, the rest of the army on foot."
"And are not these animals frightened at the terrible noises made by the weapons you speak of?"
"They speedily become accustomed to them, Your Majesty, just as men do; and will carry their rider into the midst of the enemy, however great the noise. Some other time I will draw for your Majesty a representation of one of our knights, or captains, charging in full armor; which is, as you have perhaps heard, made of a metal that is not known here."
"And these weapons that you speak of are made of the same metal?"
"They are mostly made of that metal, Sire, though sometimes they are made of a metal which we call brass, which is a compound of copper, and of another metal called tin, which adds greatly to its strength and hardness."
"But how do they work? What machinery can be used to hurl a missile at so vast a distance?"
"There is no machinery, Sire. The weapon is a hollow tube of vast strength, closed at one end, with only a small hole left there by which fire can be applied. A black powder, composed of various substances, is placed in the tube and pressed up to the end, a wad of cotton or other material being forced down upon it. A large ball made of this metal, which is called iron, and almost the same diameter as the tube, is pushed down upon the wad; and the weapon is pointed at the enemy, or at the wall to be knocked down. Then fire is applied to the small hole, the powder at once explodes with a noise like thunder, and the ball is sent through the air with so great a speed that the eye cannot follow its flight, and all that it strikes goes down before it."
"Even one of these captains on his horse?" the king asked.