Ever hear of the man who walked upside down? The guano mummy? The four-ton Chinese giant? The disembodied singing head of Anthropoglossos? Whenever a mysterious curiosity arrived in Victorian London, people knew there was one man who would always be at the scene: Frank Buckland. A barrel-chested surgeon chomping an ever-present cigar, Buckland was one of the most outsized eccentrics of his time ? a naturalist who seriously proposed kangaroo-and...