Though certain that this covered something more than my medical services, I answered without hesitancy: "Anything within my power, sir!"

"Good," he replied, and he nodded. "Here is a question to test that—Supposing the expedition, in exploring our unknown boundaries, should chance to find itself in the vicinity of the Spanish settlements—"

I started, and leaned toward him, eager-eyed. "Yes!" I cried. "You mean—?"

"By ——!" he muttered. "What do you mean? You're like a hound on a blood trace!"

"Who is not eager to get at the secrets of El Dorado?" I parried.

"So?" he said. "I fear that Colonel Burr has been plying you with his harebrained schemes."

"He spoke to me of the Mexican mines."

"You are not the first of his dupes."

"Dupe, sir! I thought that you were yourself one of his friends."

"Friend?—to him!" The General swelled with what seemed to me over-acted indignation. "But I forgive you your ignorance, sir. Let us return to the point under discussion. The question is, would you, under the supposition I have stated, be willing to risk yourself among the Spaniards?"