Circumstantial evidence is occasionally very convincing, as when you find a trout in the milk, to quote Thoreau's example.
Arthur Conan Doyle (2007). “The New Annotated Sherlock Holmes: The Complete Short Stories: The Adventures of Sherlock Holmes and The Memoirs of Sherlock Holmes (Non-slipcased Edition) (Vol. 1) (The Annotated Books)”, p.305, W. W. Norton & Company
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