Alphonse Daudet | Alphonse Mucha | Alphonse Merrheim | Alphonse de Lamartine | Alphonse Juin | Jean-Baptiste Alphonse Karr | Alphonse Royer | Alphonse Milne-Edwards | Alphonse Legros | Louis Alphonse, Duke of Anjou | Louis-Alphonse Boyer | Camille Alphonse Faure | Alphonse Poaty-Souchlaty | Alphonse Loubat | Alphonse Le Gastelois | Alphonse James de Rothschild | Alphonse Boudard | Alphonse A. Kolb | Claude Alphonse Delangle | Camille Alphonse Trézel | Alphonse Yanghat | Alphonse Toussenel | Alphonse "Sonny Red" Indelicato | Alphonse Sagebien | Alphonse Roy | Alphonse Pyramus de Candolle | Alphonse Poitevin | Alphonse Picou | Alphonse Kotiga | Alphonse Joseph Glorieux |
In 1903, together with Alphonse Laveran (1845–1922), he showed that the parasite responsible for the visceral leishmaniasis (or Kala-azar, a fever in India), first described by William Boog Leishman (1865–1926), is a new protozoa, different from Trypanosoma, the agent of the sleeping sickness, and from Plasmodium, the agent of paludism (malaria).