THE FAIRY TALE OF FATHER BROWN
extraordinary thoroughness and severity, by very well-organised officials over a small and familiar area, and, so far as human strength and science can be absolutely certain of anything, Prince Otto was absolutely certain that nobody could introduce so much as a toy pistol into Heiligwaldenstein."
"Human science can never be quite certain of things like that," said Father Brown, still looking at the red budding of the branches over his head, "if only because of the difficulty about definition and connotation. What is a weapon? People have been murdered with the mildest domestic comforts; certainly with tea-kettles, probably with tea-cosies. On the other hand, if you showed an Ancient Briton a revolver, I doubt if he would know it was a weapon—until it was fired into him, of course. Perhaps somebody introduced a firearm so new that it didn't even look like a firearm. Perhaps it looked like a thimble or something. Was the bullet at all peculiar?"
"Not that I ever heard of," answered Flambeau; "but all my information is fragmentary, and only comes from my old friend Grimm. He was a very able detective in the German service, and he tried to arrest me; I arrested him instead, and we had many interesting chats. He was in charge here of the inquiry about Prince Otto, but I forgot to ask him anything about the bullet. According to Grimm, what happened was this." He paused
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