They aided him back to the boats and made a bed upon which he might lie, his head propped up so that he could see what lay ahead. Other men completed the evening hunt, and the boats hurried on down the river. The next day found them fifty miles below the scene of the accident.
"Sergeant," said Meriwether Lewis, "the natural fever of my wound is coming on. Give me my little war-sack yonder--I must see if I can find some medicine."
Gass handed him his bag of leather, and Lewis sought in it for a moment. His hand encountered something that crinkled in the touch--crinkled familiarly! For one instant he stopped, his lips compressed as if in bodily pain.
It was another of the mysterious letters!
Before he opened it, he looked at it, frowning, wondering. Whence came these messages, and how, by whose hand? All of them must have been written before he left St. Louis in May of 1804. Now it was August of 1806. There was no human agency outside his own party that could have carried them. How had they reached him? What messenger had brought them? He forgot the fever of his wound in another and greater fever which arose in his blood.
He was with his men now, their eyes were on him all the time. What should he do--cast this letter from him into the river? If he did so, he felt that it would follow him mysteriously, pointing to the corpus delicti of his crime, still insistent on coming to the eye!
His men, therefore, saw their leader casually open a bit of paper. They had seen him do such things a thousand times, since journals and maps were a part of the daily business of so many of them. What he did attracted no attention.
Captain Lewis would have felt relieved had it attracted more. Before he read any of the words that lay before him, in this same delicate handwriting that he knew so well, he cast a slow and searching gaze upon the face of every man that was turned toward him. In fact, he held the letter up to view rather ostentatiously, hoping that it would evoke some sign; but he saw none.
He had not been in touch with the main party for more than a month. He had with him nine men. Which of these had secretly carried the letter? Was it Gass, Cruzatte, Drouillard, Reuben Fields, or McNeal?
He studied their faces alternately. Not an eyelash flickered. The men who looked at him were anxious only for his comfort. There was no trace of guilty knowledge on any of these honest countenances before him, and he who sought such admitted his own failure. Meriwether Lewis lay back on his couch in the boat, as far as ever from his solution of the mystery.