On retirement he returned to Victoria and became a Senior Associate in medical history at the University of Melbourne . However , he continued to provide diagnoses and recommendations for Tasmanian patients including in 1984 Martin Bryant , who went on to commit the Port Arthur massacre in 1996 . Dax was admitted to the degree of Doctor of Medicine '' honoris causa '' at the university on 15 December 1984 , and remained a Senior Fellow in Psychiatry at the Royal Melbourne Hospital .
Port Arthur massacre
Port Arthur massacre (Australia)
Eric Cunningham Dax