"In Mexico," replied Jim. "This was what the Pirates were after. And they got all but this. Sometime I will tell you the story of its discovery. Now take this to reimburse you, Senor, for the money we spent at the store." And he held out the diamond.

"That is far too much. That stone is worth five hundred dollars at least," said the Spaniard. "These three rubies would be more exact and I will take them."

Jim, handing over the three stones selected, said, "Now, Senor, you shall take the diamond as a token of good will from my brother and myself."

"We insist upon it," chimed in Jo.

Finally the Spaniard accepted the gifts with many protestations of obligation and appreciation. Jo was about to urge him to accept a jewel for his sister, but Jim stopped him, knowing that the proud Spaniard would not hear to such a present.

The next morning they were up an hour before daylight and ate a hearty breakfast by the light of the candles. Veterans though they were, the boys felt a thrill go through their pulses as they thought of the expedition that lay before them. Outside they could hear the pawing of the impatient horses.

"To the success of our expedition and the rescue of our friends!" was the toast the Spaniard proposed as they rose from the table. The Frontier Boys drank it, but not in wine. They felt just a little foolish too, but such is the reward that often comes with doing what is right. But they were sturdy in their determination to stick to their principles.

If they had only known it, down in his heart the Spaniard respected them the more, even though it seemed odd to him.

Then they went out on the verandah, fully armed and ready to take their departure. Two oil lamps near the door and fastened to the wall, backed by shining reflectors sent a strong light across the verandah and into the darkness outside.

There stood the three horses, eager to be off, each one held by a Mexican groom. Caliente we already know, and the horse that Jo is to ride also. So let us take a glance at the third animal, Don Fernando. He evidently justified all the enthusiasm of his master, a truly splendid creature.