A "sourcier" is someone who detects a source hence a warter-diviner. wat is known in English as a dowser. Thhe film came out in 1913 and is very definitely by Jean Durand, who included it on the list he personally compiled of his films. Roméo Bosetti was working by this time for Pathé and would later move to Éclair but he had not worked for Gaumont since 1910.
Review of Calino sourcier
