Of a martyr (ibid. 1899). A work of sacred character The legend of St Christopher was taken up several times (1908-1915-1920). D'I. is also known for his works on musical literature, such as César Franck (ibid. 1900) and Cours de composition musicale (ibid. 1903-1909).
BIBL.: A. Sériyex, V. D'I., Paris 1914; L. Borgex, V. D'I., ibid. 1914.