In 1888, an important year in his career, he accepted the position of Director of Services, joined the editorial board of the Annales de l’Institut Pasteur, and established the first regular course on microbiological technique, which would become extremely influential in the training of many important French and foreign researchers and physicians in infectious diseases.
1888. je bila važna godina u njegovoj karijeri jer je tada prihvatio položaj direktora službe, pridružio redakcije Annales de l'Institut Pasteur i osnovao prvi redovni kurs o mikrobiološkim tehnikama, koji je postao izuzetno uticajan materijal u obuci mnogih značajnih francuskih i stranih istraživača i lekara u zaraznim bolestima.