She told of having overheard Adam Selden and Oliver's conversation that night at Poison Oak Ranch, and of the other eavesdropper who had stolen down from the spring. She was almost sure, she told him, that this man was Digger Foss; but whether or not Foss knew of the treasure she could not determine. Apparently, though, he suspected something of the kind, and had been looking out for his own interests that night. Yes, it was the bridle and saddle and the gem-mounted _conchas_ that had changed Selden's attitude toward Oliver. The underlying reason for his wishing Oliver off the Old Ivison Place had been the fear that the search for the gems, which he had carried on intermittently for so long, would be interrupted. But to his gang he had pretended that it was sheer deviltry that caused him to contemplate driving the newcomer out. Then a sight of the gem-mounted _conchas_ of his old partner, and the fact that Oliver was at once taken into brotherhood by the Showut Poche-dakas changed his plans. Oliver knew of the gems and had come to seek them. He either was Dan Smeed's son, or had been taken into Dan Smeed's confidence. Oliver would become Watchman of the Dead. If he did not already know the location of the stones, he soon might learn it from the Indians. His friendship must be cultivated by all means, so that Selden might have the better chance of obtaining what he considered his rightful share of the treasure. Oliver had then told Jessamy of the prospect holes on the hillside, of Digger Foss's spying on the cabin, of Tommy My-Ma's strange actions, and of the lithia he had found. "Yes, lithia is an indication of gems," she had told him. "And it would appear that Digger knows of the treasure, after all. Perhaps sometime Selden confided in him in a careless moment, to enlist his aid in the search. They're pretty confidential. Digger was watching your movements, to see if you had any definite idea of the location of the stones or were searching for them blindly. That's it! He knows! But still he's suspicious of Old Man Selden. All of the Poison Oakers are now. They think he's double-crossing them some way, since he made friends with you. "As for Tommy My-Ma trailing Digger, I'm not surprised. No doubt the Showut Poche-dakas are watching Old Man Selden and his gang as respects their attitude toward the new Watchman of the Dead. If the Poison Oakers had tried actually to molest you, I have an idea they'd have found they'd bitten off a chunk. I think they would have had fifty Showut Poche-dakas on their backs before they had gone very far." All this passed through Oliver's mind again and again this morning, as he sat there with pipe gone out and idle pencil in his fingers.