the barrow again. I came against the jamb of a street door, I groped
across to the door itself, I found the keyhole of the familiar Yale
pattern, I inserted my key and turned it; and the door of the museum
entrance opened. I had brought my ship into port.

"I listened intently. Someone was creeping down the street, hugging the
railings. I closed the door to let him pass, and heard the groping hands
sweep over the door as he crawled by. Then I went out, steered across to
the barrow, picked up one of the specimens and carried it into the hall,
where I laid it on the floor, returning immediately for the other. When
both the specimens were safely deposited, I came out, softly closing
the door after me with the key, and once more took up the
barrow-handles. Slowly I trundled the invaluable little vehicle up the
street, never losing touch of the curb, flinging the stakes and cordage
into the road as I went, until I had brought it to the corner of a
street about a quarter of a mile from my house; and there I abandoned
it, making my way back as fast as I could to the museum.

"My first proceeding on my return was to carry my treasures to the
laboratory, light the gas and examine their hair. I had really some
hopes that one of them might be the man I sought. But, alas! It was the
old story. They both had coarse black hair of the mongoloid type. My
enemy was still to seek.

"Having cleaned away my 'make-up,' I spent the rest of the day pushing
forward the preliminary processes so that these might be completed
before 'decay's effacing fingers' should obliterate the details of the
integumentary structures. In the evening I returned to Whitechapel and
opened the shop, proposing to purchase the dummy skeletons on the
following day and to devote the succeeding nights and early mornings to
the preparation of the specimens.

"The barrow turned up next day in the possession of an undeniable tramp
who was trying to sell it for ten shillings and who was accused of
having stolen it but was discharged for want of evidence. I compensated
the green grocer for the trouble occasioned by my carelessness in
leaving the back gate open; and thus the incident came to an end. With
one important exception, for there was a very startling sequel.

"On the day after the expedition, I had the curiosity to open the panels
and go through into the room that the murderers had occupied, which had
now been locked up by the police. Looking round the room, m