This Latin Quarter episode begins at Place Émile Mâle and features the strange story of the disappearing Roman arena. We also talk about the discrete author of The Story of O, and the wonderful botanist, Bernard de Jussieu, who is responsible for my all-time favourite tree. This episode wraps up in the lush Jardin des Plantes, where so many Parisians took refuge in the shade during this past excessively hot summer.  Remember to visit my website for extra links & images. As always, thanks to Bremner Fletcher for technical expertise. The Improbable Walks theme music is performed by David Symons, New Orleans accordionist extraordinaire.