"As my new engineers you shall both sign this report, and I shall have much pleasure from reading this, many times, when I am an old man." Don Luis dipped a pen in ink, then held it up.

Harry was about to take the pen when Tom Reade drawled: "It wouldn't be quite right for us to sign this report, Don Luis." "Why not ?" queried the Mexican, wheeling like a flash.
"Just for the simple reason," Reade answered, "that to sign the report would be to state all the facts contained in the report as being of our personal observation.

We haven't seen enough of the mine, as yet, for it to be right for us to sign the report.
An engineer's signature to a report is his statement--ON HONOR--that he personally knows such report to be true.

So I am very certain you will understand that it would be a breach of honor for us to sign this document." "Ah! He is clever--and now the real trouble must begin!" Dr.
Tisco told himself.

"These engineers are not easily duped, but in Don Luis's hands they will destroy themselves!".