Page:The Incredulity of Father Brown.pdf/109

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The Oracle of the Dog

in sealed chambers which no one could enter, does not apply to the present case, because it is a summer-house. When we talk of a Yellow Room, or any room, we imply walls that are really homogeneous and impenetrable. But a summer-house is not made like that; it is often made, as it was in this case, of closely interlaced but still separate boughs and strips of wood, in which there are chinks here and there. There was one of them just behind Druce's back as he sat in his chair up against the wall. But just as the room was a summer-house, so the chair was a basket-chair. That also was a lattice of loopholes. Lastly, the summer-house was close up under the hedge; and you have just told me that it was really a thin hedge. A man standing outside it could easily see, amid a network of twigs and branches and canes, one white spot of the Colonel's coat as plain as the white of a target.

"Now, you left the geography a little vague; but it was possible to put two and two together. You said the Rock of Fortune was not really high; but you also said it could be seen dominating the garden like a mountain-peak. In other words, it was very near the end of the garden, though your walk had taken you a long way round to it. Also, it isn't likely the young lady really howled so as to be heard half a mile. She gave an ordinary involuntary cry, and yet you heard it on the shore. And among other interesting things that you told

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