"We've got to make the old camping-ground tonight, if it takes us till midnight," Bud answered emphatically. "That is, we've got to, if we expect to get to Sacramento City to-morrow; and that's where I, for one, expect to be sometime to-morrow night. I reckon, we'll have to drive them pack-horses in front of us and use the whip a little."

"A bully idea," Thure agreed. "I wonder why we did not think of it before. Here, you old slowpoke, get up!" and, whirling his horse around, he suddenly rode up behind his pack-horse and gave that animal a quick blow with his whip.

The scheme worked splendidly; and the two boys were soon on their way again and moving at a considerably increased speed. But, notwithstanding their accelerated motion, it was not until some three hours after sunset that the two tired boys and the four tired horses reached the old camping-grounds, where there was an abundance of water for themselves and horses and fuel for the camp-fire.

"Well, I swun I am tired!" Thure exclaimed, as he threw himself down with a sigh of satisfaction on his blanket before the camp-fire, when, at last, the horses had been unsaddled and unbridled and unpacked and picketed where they could feed on the rich grass, and the two boys had eaten their rude meal of broiled venison—they had shot a young deer on their way—and homemade bread, washed down by a huge tin cup full of coffee of their own brewing.

"I reckon you are not the only tired boy in this camp to-night," and Bud spread out his blanket on the ground by the side of Thure's and stretched himself out on it. "Every bone and muscle in my body has been just a-teasing me for the last two hours to let up and give them a rest. Well, we got here anyhow; and I guess we can now make Sacramento City all right to-morrow night. Say," and he sat up on his blanket with a jerk at the thought that had suddenly come to him, "do you suppose those two villains, who robbed and killed the old miner, have found out that we have the skin map that they committed murder in vain to get? If they have, I reckon we'll have to be on the lookout for them good and sharp. Why, they might be on our trail even now!"

"You are right," and Thure sat up quickly. "But I can't see just how they could know that we have the map. They certainly didn't wait for introductions when we charged down upon them; and I don't believe they followed us home—they were too scart, the cowards! But, as Kit Carson says: 'The time to be cautious is before the Indians get your scalp—not afterwards.' I reckon that means that we've got to keep guard to-night; and I don't believe I ever felt more sleepy," and Thure sighed. "But, if Brokennose and Pockface should happen to be on our trail, they couldn't ask for anything better than to get us two here alone and asleep to-night. They sure would have the skin map in the morning, and, probably, our horses and supplies, and, possibly, our lives. Say, but I just would like to meet them two cowards when I am awake!" and Thure's eyes glinted wrathfully.

"Well, I should not be surprised if we had that pleasure before long," and Bud's face hardened. "If the old miner told them of the Cave of Gold and the skin map, and he said he did, they sure will be on the lookout for the party with the map; and it wouldn't take much inquiring for them to find out that it was us that brought the dead miner home; and then, I reckon, it won't take them two minutes to guess what started us so sudden-like for the mines. I sure hope they won't find us until we get to our dads and Rex and Dill and Hammer Jones. I'd feel safe enough then. You see, we are guarding not only our lives, but also the Cave of Gold; and the finding of that cave means a lot to all of us."

"It sure does," Thure agreed. "Luck has been against both of our dads lately; and, well, we've just got to find that Cave of Gold; and we are going to find it, in spite of all the broken noses and pockmarked faces in the world. But, it won't do to sit here talking all night. We must get all the sleep we can. Who will stand guard first?"

"I will," Bud answered, picking up his rifle and rising; "so get into your blanket and asleep as quick as you can. It must be almost midnight now."

"All right," and Thure began rolling himself up in his blanket. "Wake me in about two hours, and I'll stand guard the rest of the night. We want to be on our way as soon as it is light enough to see. Good night," and in five minutes Thure was as dead to his surroundings as the log near which he lay.