Translations for milestone in French

Here are paragraphs from public domain books translated:

He did not regret them. As soon as he was released, he was secretly informed that, every quarter, on a given date, at a given hour, under a given milestone on a given road, he would find three gold louis.	Il ne les regretta point. Dès sa libération, il fut avisé secrètement que, tous les trimestres, à telle date, à telle heure, sous telle borne de telle route, il trouverait trois louis d’or.
The Confessions of Arsene Lupin, by Maurice Leblanc	Les Confidences d’Arsène Lupin, de Maurice Leblanc