“…3 But it is also likely that conditions in France could not have been as propitious for vivisection as was possible during wartime in Namur. 1 In a touching, belated gesture attempting to rectify the injustice of depriving Petit of proper recognition, Italian neurologist-psychiatrist Serafino Biffi (1822-1899), a key supporter of Camillo Golgi's earliest experimental work, named the "syndrome of Pourfour du Petit" in his honor, although it refers to stimulation of the cervical sympathetics and thus the opposite of what now is generally known as "Horner's syndrome" and had been accurately described in dogs in 1727 by Petit (Ségura, Speeg-Schatz, Wagner, & Kern, 1998). 2 The copy in the Bibliothèque Nationale upon which this account is based indicates authorship inserted with pen and ink as "par Francois Petit," a feature lacking in the London copy photographed by William Osler in assisting a scholarly report by H.M. Thomas (1910) on the pyramidal decussation.…”