be seen; this must be hushed up. You understand? It must not get into
the Press--"

The man saluted respectfully, and the three of us addressed ourselves
to the mournful task. By slow stages we bore the dead man to the edge
of the common, carried him across the road and into my house, without
exciting attention even on the part of those vagrants who nightly
slept out in the neighbourhood.

We laid our burden upon the surgery table.

"You will want to make an examination, Petrie," said Smith in his
decisive way, "and the officer here might 'phone for the ambulance. I
have some investigations to make also. I must have the pocket lamp."

He raced upstairs to his room, and an instant later came running down
again. The front door banged.

"The telephone is in the hall," I said to the constable.

"Thank you, sir."

He went out of the surgery as I switched on the lamp over the table
and began to examine the marks upon Forsyth's skin. These, as I have
said, were in groups and nearly all in the form of elongated
punctures; a fairly deep incision with a pear-shaped and superficial
scratch beneath it. One of the tiny wounds had penetrated the right
eye.

The symptoms, or those which I had been enabled to observe as Forsyth
had first staggered into view from among the elms, were most puzzling.
Clearly enough the muscles of articulation and the respiratory
muscles had been affected; and now the livid face, dotted over with
tiny wounds (they were also on the throat), set me mentally groping
for a clue to the manner of his death.

No clue presented itself; and my detailed examination of the body
availed me nothing. The grey herald of dawn was come when the police
arrived with the ambulance and took Forsyth away.

I was just taking my cap from the rack when Nayland Smith returned.

"Smith!" I cried, "have you found anything?"

He stood there in the grey light of the hall-way tugging at the lobe
of his left ear.

The bronzed face looked very gaunt, I thought, and his eyes were
bright with that febrile glitter which once I had disliked, but which
I had learned from experience to be due to tremendous nervous
excitement. At such times he could act with icy coolness, and his
mental faculties seemed temporarily to acquire an abnormal keenness.
He made no direct reply, but--

"Have you any milk?" he jerked abruptly.

So wholly unexpected was the question that for a moment I failed to
grasp it. Then--

"Milk!" I began.