Last June I had a wonderful, if brief trip through the Cemetière du Montparnasse in Paris with my friend Mary Gilbert from Cincinnati. Mary is a devoted Francophile and docent at the Spring Grove Cemetery in Cincinatti. While we were there I noticed pebbles arranged in circles on many of the grave stones. Mary explained that it is a Jewish custom to leave a stone when you visit. Yesterday I stopped by the Union Hill Cemetery for another look around. This nut atop a marker reminded me of that.