[Hermann Joris (1875-1910), a forgotten histologist].

Hermann Joris (1875-1910) was professor of histology at the Medical college of the Université libre de Bruxelles between 1908 and 1910. At the time of its nomination, its work relating to the pituitary gland and the neurons was the object of critical sharp by Albert Brachet. The author analyzes in what these criticisms rested certainly on sometimes debatable interpretations scientific, but betray also a quarrel between two generations of teachers of the University.