Report on a Recent Inspection of the Pearl Banks. Sessional Papers. Colombo, 1885. Fol.
Report of a Recent Inspection of the Pearl Banks. Sessional Papers. Colombo, 1886. Fol.
Report of an Inspection of the Pearl Banks, 1887. Sessional Papers. Colombo, 1888. Fol.
Report on the Failure of Oysters on the Cheval Paar, 1887. Sessional Papers. Colombo, 1888. Fol.
Donnan (James) and Twynam (W. C.)
Reports by the Superintendent of the Fishery and the Inspector of the Pearl Banks. Sessional Papers. Colombo, 1887. Fol.
Doumert (A.)
Nos Parures. Le Jais et les Perles Fausses. Paris, 1890. 12mo.
Dubois (Raphaël)
Sur le mécanisme de la formation des perles fines dans le Mytilus edulis. Comptes Rendus de l’Académie des Sciences, Vol. cxxxiii, pp. 603–605. Paris, 1901.