 He described several hundreds of new species in many scientific publications especially in the Bulletin and Annales of the Société entomologique de France of which he was a very active member.Bourgeois contributed to Alsatian entomology with his catalogue of the beetles of "la chaîne des Vosges" and surrounding regions published in part in 1898 in the "Bulletin de la Société d’histoire naturelle de Colmar".This included information on 3000 species from numerous localities.