The rifle lay where Sheba had dropped it when she ran to gather her stricken lover into her arms. Macdonald picked it up and strode over the brow of the hill without a backward look. He was too proud to stay and watch them. It was impossible to escape him in the deep snow that filled the hill trails, and he was convinced they would attempt nothing of the kind. The Scotchman felt for the first time in his life old and spent. Under tremendous difficulty he had mushed for two days and had at last run his men down. The lust of vengeance had sat on his shoulders every mile of the way and had driven him feverishly forward. But the salt that had lent a savor to his passion was gone. Even though he won, he lost. For Sheba had gone over to the enemy. With the fierce willfulness of his temperament he tried to tread under foot his doubts about the guilt of Holt and Elliot. Success had made him arrogant and he was not a good loser. He hated the man who had robbed him of Sheba, but he could not escape respecting him. Elliot had fought until he had been hammered down into unconsciousness and he had crawled to his feet and stood erect with the smile of the unconquered on his lips. Was this the sort of man to murder in cold blood a kindly old gentleman who had never harmed him? The only answer Macdonald found was that Milton had taken him and his partners by surprise. They had been driven to shoot the cashier to cover up their crime. Perhaps Holt or another had fired the actual shots, but Elliot was none the less guilty. The heart of the Scotchman was bitter within him. He intended to see that his enemies paid to the last ounce. He would harry them to the gallows if money and influence could do it. None the less, his doubts persisted. If they had planned the bank robbery, why did they wait so long to buy supplies for their escape? Why had they not taken the river instead of the hill trail? The story that his enemies told hung together. It had the ring of truth. The facts supported it. One piece of evidence in their favor Macdonald alone knew. It lay buried in the deep snows of the hills. He shut his strong teeth in the firm resolve that it should stay there. CHAPTER XXXI SHEBA DIGS The weather had moderated a good deal, but the trail was a protected forest one. The two teams now going down had come up, so that the path was packed fairly hard and smooth. Holt lay propped on his own sled against the sleeping-bags. Sheba mushed behind Gordon. She chatted with them both, but ignored entirely the existence of Macdonald, who followed with his prize-winning Siberian dogs.