[1] In 1943, Barry returned to Dublin on a fellowship in organic chemistry to work for the Medical Research Council.
He researched the chemotherapy of tuberculosis, looking for a cure for TB which was a significant health issue in Ireland at the time.
[1] In 1950, Barry and his former mentor Thomas Dillon, Ceimic, the first chemistry textbook to be published in Irish.
Barry advised Tomás De Bhaldraithe on scientific terms when the later was developing a dictionary of modern Irish, published in 1959.
[1] In 1931, Barry married fellow UCD student Angela O'Connor from County Offaly.
[12] In 2008, the Leprosy Mission held an event at the Royal Irish Academy in Dublin to honour the centenary of his birth.