problem to the heart of which the lance of his keen wit failed to
penetrate. His humour might not display itself in the spoken word, he
merely became oblivious of everything and everybody around him. People
might talk to him and he scarce noted their presence, familiar faces
appear and he would see them not. Outwardly he remained the observant
Harley who could see further into a mystery than any other in England,
but his observation was entirely introspective; although he moved amid
the hustle of life he was spiritually alone, communing with the
solitude which dwells in every man's heart.

Presently, then, as we came to the lake at the foot of the sloping
lawns, where water lilies were growing and quite a number of swans had
their habitation, I detected the fact that I had ceased to exist so far
as Harley was concerned. Knowing this mood of old, I pursued my way
alone, pressing on across the valley and making for a swing gate which
seemed to open upon a public footpath. Coming to this gate I turned and
looked back.

Paul Harley was standing where I had left him by the edge of the lake,
staring as if hypnotized at the slowly moving swans. But I would have
been prepared to wager that he saw neither swans nor lake, but mentally
was far from the spot, deep in some complex maze of reflection through
which no ordinary mind could hope to follow him.

I glanced at my watch and found that it was but little after two
o'clock. Luncheon at Cray's Folly was early. I therefore had some time
upon my hands and I determined to employ it in exploring part of the
neighbourhood. Accordingly I filled and lighted my pipe and strolled
leisurely along the footpath, enjoying the beauty of the afternoon, and
admiring the magnificent timber which grew upon the southerly slopes of