''Sir,' said she, again addressing me; 'your honor alone has kept you in
ignorance of our secret. You could easily have tempted and corrupted
Pepito. We prefer you should learn it from us rather than from an
accidental source. We merely request your word of honor that you will
not use it to your own advantage, without our joint consent, nor in any
way thwart our plans.'

''I am deeply sensible, madame, of the confidence you repose in me; but
I must beg you will allow me to remain in ignorance.'

''You refuse, then, to give us the promise?' exclaimed Adéle, 'I see it
all! you will thwart us; you would preserve your liberty of action
without forfeiting your word.'

'If you had known me longer, such a suspicion would not have crossed
your mind. However, as I have no other means of proving it unjust, I
will give the pledge you desire, I am now ready to hear whatever you
have to communicate.'

'Mr. Livermore resumed the conversation:

''The secret which Adéle imparted to me will, I dare say, appear at
first very extravagant, but before you laugh at it, give me time to
explain. It is the existence of a marvelous opal mine in the interior;
the precise location of which is known to no one save Adéle and myself.'

'In spite of the greatest effort, I could not suppress a smile of
incredulity, at this announcement. Mexico is so full of strange stories
of fabulous mines, that this wondrous tale of opals looked to me like
some new confidence game, and I felt sure my neighbors were duped or