This was by no means easy, as it turned out. His College career was already buried in the snows of some twenty-five years. Moreover, when I questioned the young daughter of our landlady as to how long her parents had lived in the house, she said at once: "Just seventeen years, ma'am. Father and mother came here the year I was born."

This did not help me much. I asked who had rented the house previously. Referring this question to her mother, she told me it had been taken from some people who had left Cambridge, and "Mother thought they were both dead now."

This was a second cul-de-sac for me!

But I was determined to go on with my investigations, simply grounded upon the strong conviction that such repeated experiences must have some foundation in fact.

The girl saw I looked disappointed. "Did you want to know about anyone who lived here long ago?" she ventured timidly.

"Yes; I wanted to find out whether an old friend of mine ever lodged here; he belonged to Peterhouse," was my answer.

"Ah, then, I am sure he would not have lodged here," said the girl confidently. "None of the Peterhouse gentlemen come here. It is always the Pembroke men who come to this house."

It seemed fated that I should hear no more about my living ghost.

A few days later, however, the luck turned.

I was told quite casually that Mr Pound, the well-known Cambridge chemist, had occupied our house years before, and I determined to verify this some day. As Mr Pound combined the post office with his drugs, one often went into the shop, but hitherto I had only seen his assistants.