39. What famous book was mislaid when in manuscript and partly written, and was only discovered by the author nine years afterwards in the drawer of an old writing-desk?

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40. What English Cathedral was set on fire and severely damaged by a man who was afterwards found to be insane?

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41. What is the best diet for brain-workers?

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42. What saint was so able a musician that according to tradition an angel descended to earth enraptured with her melodious strains?

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43. What is the origin of the three ostrich feathers as a badge of the Princes of Wales?

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