[Joseph-François Bourdier from La Moulière and his work in the five-year fever].

J.-F. Bourdier was one of the doctors of the Faculty of Paris. As a medical doctor for the Archduchess Marie-Louise, he was also able to conduct his scientific research. In 1808, during the difficult time of the Continental System, J.-F. N. took part in the research work on a substitute for cinchona and tested some treatments. However, being not a chemist, he could not make any chemical analysis. Then, the chemists Caventou and Pelletier discovered quinine in 1820.