Fun with chemistry and Jean-Henri Fabre: click on the PDF of Eleanor Doorly's Insect Man and read the chapter on pages 20-21. (Penelope, Geraldine et al are an English family visiting France and trying to find all the places where Fabre lived.) We happen to have a set of Bonjour magazines from Mama Squirrel's own school days and one of them has photos of Avignon, which we used along with this chapter. Since most people haven't saved their 1977 Bonjours, you can look at these pictures on Wikipedia.
Well, at least nobody got killed.