that wouldn't be recognized as his. If you, for instance, flew in the ordinary way, Mr. Merton and his friends might recognize the rig-out, perhaps; but you might pass pretty near that window on a different pattern of plane, or whatever you call it; near enough for practical purposes."
"Well, yes," began the young man, almost automatically, and then ceased, and remained staring at the cleric with an open mouth and eyes standing out of his head.
"My God!" he said, in a low voice, "my God!"
Then he rose from the lounge seat, pale and shaking from head to foot, and still staring at the priest.
"Are you mad?" he said; "are you raving mad?"
There was a silence and then he spoke again in a swift, hissing fashion. "You positively come here to suggest———"
"No, only to collect suggestions," said Father Brown, rising. "I may have formed some conclusions provisionally, but I had better reserve them for the present."
And saluting the other with the same stiff civility, he passed out of the hotel to continue his curious peregrinations.
By the dusk of that day they had led him down the dingy streets and steps that straggled and tumbled towards the river in the oldest and most
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