sentences:  After the departure of Duboscq to Paris, Grassé worked for Eugène Bataillon (1864–1953) and there discovered techniques for experimental embryology.In 1926, Grassé became vice-director of the École supérieure de sériciculture.He submitted his theses, "Contribution à l'étude des flagellés parasites", in 1926, and it was published in the "Archives de zoologie expérimentale et générale".