son at his back had fallen across the lid of the
box as he was closing it. He did not recognize the shadow and had not
given it at the time a second thought, but the remembrance of it came
back vividly when he saw the bow lying before him and realized the part
it had played in the morning's tragedy. Was it because he knew that only
a person actively connected with the museum would have access to that
part of the cellar? I asked. I did not expect an answer, and I did not
get it. We looked at each other for a moment, then I let him go."

A momentary silence, which the Inspector broke by saying:

"Later I called the Curator in, and he also recognized the bow as
belonging to the museum. But he volunteered no explanations and in fact
had little to say on the subject. He was evidently too much startled by
the direct connection which had thus been made between the crime (or
accident, if you will) and the personnel of the museum."

"That was natural. He should be the first to see that the bow which shot
the arrow must of necessity have been brought into the building by some
other door than those at which the doormen stood guard. I had a talk
with those men, and they both declared that no sticks or umbrellas or
anything of that nature ever went by them or would be allowed to go by
them, no matter how concealed or wrapped up. But to revert to the matter
in hand. So Correy made absolutely no attempt to explain how this weapon
had been carried from cellar to gallery without his knowledge?"

"No. He for one will have a sleepless night."

"Not he alone. I must and will see a way through this maze. To-morrow may
bring luck. Ah, I forgot to say that I spent an hour of the three you
allowed me with the captain of the steamer which brought over these two
women. As might be expected, he had no information of any significance to
give me; nor could I obtain much from such members of the crew as I could
get hold of. One steward remembered the Englishman, chiefly because he
never showed himself unless the young lady was on deck. But he never saw
them speak."

"Which bears out Travis' story to the last detail."

"Exactly. I think we can depend upon _him_; otherwise we _should_ be at
sea."

"Yet his story is a very strange one."

"The whole affair is strange--the strangest I ever knew. But that isn't
against it. It's the commonplace case which baffles. We shall get the key
to the whole mystery yet."

"I've no doubt. Is Mr. Travis to