"I can never consent to that, Dan," said Lawrence. "I had rather tell Blair I have reconsidered his proposition and cannot accept."

"You'll do no such thing," retorted Sherman. "I will try and behave myself, but I feel that something will happen, and we will not be separated."

Something did happen, much quicker than either one expected. Something which entirely changed the calculations of Lawrence. It was to be some months before he saw service with Blair.

Lawrence and Dan were passing a newspaper office, before which a large crowd had gathered, reading the war bulletins. They told that Halleck was tightening his lines around Corinth and that the place must soon fall; and that McClellan was well on his way towards Richmond.

It was curious to watch the faces of those who read. The countenances of those who were for the Union would brighten when anything was posted favorable to the Union cause, and now and then a cheer would be given.

The iron heel of the Yankees was on St. Louis, and the Confederate sympathizers dare not be so outspoken, but when anything favorable to the South was posted their eyes would flash, and their countenances beam with joy.

And thus the crowd stood and read, once friends and neighbors, but now ready to rend each other to pieces at the first opportunity.

Lawrence mingled with the crowd, and as he read he felt a bulky envelope thrust in his hand and caught a glimpse of a dusky arm. He glanced at the address and then turned to see who had given it to him, but could not. He glanced at the envelope again. Yes, it was for him. In bold letters was written, "For Captain Lawrence Middleton. Important."

The writing was strange to Lawrence, and making his way through the crowd he sought a private place where he could see what had so mysteriously come into his possession. As he read, a look of surprise came over his face, and then his countenance grew stern and grim. Carefully he read the document through from beginning to end. It was signed "By One Who Knows." There was not a mark to tell who was the writer. The writing was strong and bold, and possessed an originality of its own, as if the writer had put much of his own character in it. Lawrence sat and pondered long. He looked the manuscript over and over again to see if he could not discover some private mark, something that would identify the writer, but he found nothing.

"Strange," he muttered, "but if Guilford Craig was alive I would swear he was the writer of this. Who else would write me, and me alone, and give such important information? Who else could obtain the information contained in this letter? Yet Guilford is dead. Benton Shelly was seen to shoot him. There were those who saw him lying on the ground, still in death, his bosom drenched in blood. But his body was not found. Guilford, Guilford, are you still alive? But why do I indulge in such vain hope that he is alive? The proof of his death is too plain. This letter must have been written by another, but who? Who? And why send it to me?"