Born on 16 November 1833 at Ivoniszki, he was educated at St Petersburg until 1858. He was on the staff of the Ujazdov Military Hospital, and was successively prosector 1862, assistant professor 1869, professor of surgery and director of the surgical clinic at the University of Warsaw 1877. His papers were published in the Polish medical journals and in the *Wiener medizinische Wochenschrift* and the *Zentralblatt für Chirurgie*. He died at Warsaw in 1914. There is a portrait-photograph of Kosinsky in the Honorary Fellows album.