At mention of the name the expression on Santiago's face changed again, this time to one of fiercest rage.

"Don Rafael!" he cried. "Don Rafael! Now I know you! You are Don Rafael. That is why I should kill you!"

"Great Scott, no, I am not Don Rafael!" shouted Billie as Santiago again raised his rifle and the lad perceived that he had to do with a crazy man. "I'm the boy that saved your life when Don Rafael tried to kill you. Don't you remember?"

Again Santiago lowered his weapon, and again there came upon his face that puzzled expression.

"Tell me, Santiago--I mean Prince Iztazil, or whatever you call it, what are you doing here?"

Santiago eyed him suspiciously, but finally laid his rifle across a table in the center of the room and approached nearer the lad.

"Listen!" he said in a whisper. "I am the guardian of the treasure of Montezuma. It is to be used to free Mexico from the Spaniard. He must be driven out. The land belongs to the Aztec."

"But where is the Aztec?" queried Billie. "I know him not."

"I am he. The peons are my people. The Spaniard--bah! He owns the houses and he owns the lands; but he must be driven out."

"Isn't that what Villa says?"

"Villa? Villa?" again repeated Santiago, and again he lapsed into silence.

For some minutes he remained motionless ere he stepped back, picked up his rifle and started for a door leading to a stairway.

"Come!" he commanded. "I will show you."

"Hadn't we better take care of the horse first?" asked Billie, not at all anxious to be wandering around with an armed lunatic.

"He may die."

"What is a horse when the future of Mexico is at stake, my son?

Come with me and you shall hear a strange tale."

"I have heard one already," was Billie's mental comment, but realizing by the term son which Santiago had applied to him that he was in no immediate danger and trusting to his wits to finally overcome the strange man should it become necessary, he followed.

At the head of the stairs was another door, which Santiago opened and entered. It was a sort of ante-room, much like the entrance into a lodge room. Around the walls was a motley collection of firearms, swords, spears and smaller weapons.

Stopping in front of one of the racks, Santiago placed his rifle in it, and then from another took a couple of small swords, one of which he handed to Billie.

"This is a bug house sure enough," muttered the boy as he took the sword and examined it curiously. "I wonder what next?"

He had not long to wait, for opening a closet, Santiago took therefrom two beautifully embroidered robes, one of which he threw over his own shoulders and the other of which he put on Billie.

"It doesn't hardly match my hat," laughed Billie.

Without a word, Santiago removed Billie's sombrero and hung it on a peg in the closet, which he closed.

Then he opened another door and led Billie into a large, brilliantly lighted room, hung with the richest tapestries.

"Looks like we had strayed into some Turkish bath house," thought Billie, "but I might as well see the thing through."

"Sit here beside me, my son," Santiago finally said. "You shall become my heir. I will introduce you to the court."

Santiago clapped his hands, as though bidding a servant to attend; but there was no response.

He turned his head from one side to the other as though in amazement and again clapped his hands, this time with vigor.

After a moment's delay, there was a movement behind one of the draperies and presently the curtain was drawn back and a man's face appeared.

"Come hither," commanded Santiago.

The man obeyed.

"Where are the others?" demanded Santiago.

"Oh, senor," cried the man, "the others have hidden themselves in the cellar!"

"Slaves! Cowards!" exclaimed Santiago. "What do they fear?"

"The great guns, senor. We might all be killed."

"You will certainly be killed if you do not mind what I say," was the reply as Santiago drew his sword. "Now summon the court that I may introduce my son."

The man bowed and left the room, and in a few minutes returned accompanied by two more men and several women, all arrayed in fantastic costumes.

All bowed as they entered, and Santiago waved his hand.

"This is my son and heir," he said. "Come and kiss his hand."

They all came forward and kissed Billie's hand, which he held out in order to facilitate the job.

"Now," said Santiago, "we----"

"Now," interrupted Billie, "if it is all the same to you, Prince, we'll have supper. I haven't had a mouthful to eat since daylight. I'm 'most starved to death."

"It is well," agreed Santiago. "It is well that my heir should not die of hunger. Let the table be placed."

The order seemed to meet with general approval, and in the course of half an hour there was spread what would have proved a feast at any time, but which was beyond description to a hungry boy; and the way he waded into the food was a caution.

During all this time Santiago had uttered never a word, nor would he eat but the smallest portion of food--a taste of every dish which he set before his guest.

"My son tells the truth," Santiago finally remarked as Billie pushed back his chair with the single word "Bastante," meaning enough.

"I always try to," was the smiling rejoinder, for Billie was now in the very best humor. Eating was his strong point and he had gone the limit.

"Clear away the feast and then rea.s.semble," was Santiago's next order.

This order was carried into effect, and the servants also must have enjoyed a square meal, for it was more than an hour ere they again a.s.sembled, during which time Billie sank back in his chair and slumbered peacefully.

He was finally awakened by a hand laid upon his arm.