The dinosaurs, built of concrete, were a kind of bonus attraction. On New Year's Eve 1853 a famous dinner for twenty-one prominent scientists was held inside the unfinished iguanodon. Gideon Mantell, the man who had found and identified the iguanodon, was not among them. The person at the head of the table was the greatest star of the young science of palaeontology. His name was Richard Owen and by this time he had already devoted several productive years to making Gideon Mantell's life hell. A double-tailed lizard, part of the vast collection of natural wonders and anatomical specimens collected by the Scottish-born surgeon John Hunter in the eighteenth century. After Hunter's death in 1793, the collection passed to the Royal College of Surgeons. (credit 6.8) Owen had grown up in Lancaster, in the north of England, where he had trained as a doctor. He was a born anatomist and so devoted to his studies that he sometimes illicitly borrowed limbs, organs and other parts from corpses and took them home for leisurely dissection. Once, while carrying a sack containing the head of a black African sailor that he had just removed, Owen slipped on a wet cobble and watched in horror as the head bounced away from him down the lane and through the open doorway of a cottage, where it came to rest in the front parlour. What the occupants had to say upon finding an unattached head rolling to a halt at their feet can only be imagined. One assumes that they had not formed any terribly advanced conclusions when, an instant later, a fraught-looking young man rushed in, wordlessly retrieved the head and rushed out again.