THE WISDOM OF FATHER BROWN
black ink. It's manifestly absurd to say that Hirsch can have made a mistake about a paper that nobody knew of but himself; or can have tried to help a foreign thief by telling him to fumble in the wrong drawer. I think we must chuck it up and apologise to old Carrots."
Father Brown seemed to cogitate; he lifted a little whitebait on his fork. "You are sure the grey envelope was in the left cupboard," he asked.
"Positive," replied Flambeau. "The grey envelope—it was a white envelope really—was"
Father Brown put down the small silver fish and the fork and stared across at his companion. "What?" he asked, in an altered voice.
"Well, what?" repeated Flambeau, eating heartily.
"It was not grey," said the priest. "Flambeau, you frighten me."
"What the deuce are you frightened of?"
"I'm frightened of a white envelope," said the other seriously. "If it had only just been grey! Hang it all, it might as well have been grey. But if it was white, the whole business is black. The Doctor has been dabbling in some of the old brimstone after all."
"But I tell you he couldn't have written such a note!" cried Flambeau. "The note is utterly
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