Africa, and the other is by obtaining the metal in what are called
pockets or placers. This is the way in which it is generally found in
Australia and Mexico. I should not be in the least surprised if this came
from the Four Finger Mine."

"There is no reason why it shouldn't," Gurdon said. "It is pretty
evident, from what you told me last night, that Mark Fenwick has
discovered the mysterious treasure house, but that does not account for
all these proceedings. Why should he have taken all the trouble he did
last night, when he might just as well have brought the stuff in, and
taken the other boxes out by the front door?"

"That is what we have to find out," Venner said. "That fellow may call
himself a millionaire, but I believe he is nothing more nor less than a
desperate adventurer."

Gurdon nodded his assent. There must have been something very urgent to
compel Mark Fenwick to adopt such methods. Why was he so strangely
anxious to conceal the knowledge that he was receiving boxes of pure gold
in the hotel, and that he was sending out something of equal value?
However carefully the thing might have been planned the drugging of lift
attendants must have been attended with considerable risk. And the
slightest accident would have brought about a revelation. As it was,
everything seemed to have passed off smoothly, except for the chance by
which Gurdon had stumbled on the mystery.

"We can't leave the thing here," the latter said. "For once in my life I
am going to turn amateur detective. I have made up my mind to get into
Fenwick's suite of rooms and see what is going on there. Of course, the
thing will take time, and will have to be carefully planned. Do you think