He successfully demonstrated the use of this antitoxin with Auguste Chaillou in a study with 300 diseased children in the Hôpital des Enfants-Malades and was henceforth hailed as a scientific hero in medical congresses throughout Europe.
On je uspešno demonstrirao korišćenje ovog otrova sa Auguste Chaillou u studiji na 300 obolele dece u bolnici Hôpital des Enfants-Malades i od tada je pozdravljen kao naučni heroj u medicinskim kongresima širom Evrope.