One day while doing research at the Hunterian Museum in London, Mantell fell into conversation with a fellow researcher who told him the tooth looked very like those of animals he had been studying, South American iguanas.
He kept apart from his fellow–travellers, knowing Mr. Fogg's taciturn tastes;besides, he did not quite like to talk to the man whose favours he had accepted.
These could be anything from family photos and holiday souvenirs, to home-made cakes and biscuits placed at the end of a desk to allow people grab a biscuit and start a conversation.