Auguste Béhal (1859-1941), Maître de Conférences (Assistant Professor) at the Sorbonne then Full Professor at the School of Pharmacy (Paris), leads many vocations among these students (Blaise, Delaby, Delepine, Detoeuf, Fourneau, Sommelet, Tiffeneau, Valeur, etc.). However, why is he embraced the vocation chemist organic chemist ? This choice is undoubtedly dictated by the meeting of Adolphe Wurtz (1817-1884) and Charles Friedel (1832-1899) who made mature in him a passion for chemical research during his formation. Nevertheless, the historical context of the city of Lens, a modest city of 2.500 inhabitants in the north of France, and the influence of two other characters : Guislain Decrombecque (1797-1870), agronomist, and Alfred Wagon (1849-1928), 2nd class pharmacist, are also noteworthy. We will outline how these two people have directly and indirectly contributed to the Béhal career.