"Try to think of it," pleaded Jack. "A lot may depend on it. I may be able to get Mr. Tevis's address from the Capital Bank in Denver, but they may refuse to give it to me, or may have lost it." "Wish I could help you, son," said Mr. Liggins, sympathetically. "But I reckon I lost that letter. Hold on, though, maybe I can fix you up. You say his address is at the Capital Bank?" "That's what I understand." "Well, I wouldn't be surprised. Come to think of it now, he did write me he transacted all his business through them. More than that he sent me a sort of card to use in case I ever got out there, and wanted to see him. Said there was reasons why he didn't want every one to know where he was, so he instructed the bank to give his address to only those who showed a certain kind of card. I reckon I kept that card as a sort of curiosity." "I hope so," murmured Jack. The stockman began looking through a big wallet he pulled from his pocket. It was stuffed with papers and bills. "Here it is!" he exclaimed, as he extended a rather soiled bit of pasteboard. "Queer looking thing." Indeed it was. The card had a triangle drawn in the center. Inside of this was a circle, with a representation of an eye. In each of the angles were, respectively, a picture of a dagger, a revolver and a gun. On top appeared this: "_In Medio tutissimus ibis_" "Don't seem to mean anything as far as I've ever been able to make out," Mr. Liggins said. "Looks like a cross between a secret order card and a notice from the vigilance committee. And them words on the top I take to be some foreign language, but I never went to school enough to learn 'em." "They're Latin," said Jack, "and mean, literally, 'you will go most safely in the middle,' or, I suppose, 'the middle way is safest.'" "That's like Orion Tevis," commented the stockman. "He was always a cautious fellow, and rather queer here,"--he tapped his forehead. "But now I don't mind giving you that card. It may be no good, and it may help you. If it does I'll be glad of it. I owe you a good turn. That was one of my steers that broke away, and I'm glad it didn't cause a freight wreck." "I'll take good care of this," said Jack, as he put the card in his pocket, "and send it back to you." "Well, if you find Tevis, just do as he says about it," the cattleman answered. "Now I'll drive you back to the city." Jack was much pleased at getting the card. He felt it would help him in his strange quest after his father. "It will be additional evidence, for us" he said to John. "Mr. Tevis might think the rings were spurious." "Not much danger of that," the Indian answered. "Still, the card may come in handy." Mr. Liggins drove the boys to the hotel where they were to stay over night. They consulted the time-tables in the lobby, and learned that their train did not leave until the next afternoon.