I have been signally assisted inn my search for materials illustrative of the social and intellectual condition of the Singhalese nation, during the early ages of their history, by gentlemen in Ceylon, whose familiarity with the native languages and literature impart authority to their communications; by ERNEST DE SARAM WIJEYESEKERE KAROONARATNE, the Maha-Moodliar and First Interpreter to the Governor; and to Mr. DE ALWIS, the erudite translator of the _Sidath Sangara._ From the Rev. Mr. GOGERLY of the Wesleyan Mission, I have received expositions of Buddhist policy; and the Rev. R SPENCE HARDY, author of the two most important modern works on the archæology of Buddhism[1], has done me the favour to examine the chapter on SINGHALESE _Literature,_ and to enrich it by numerous suggestions and additions. [Footnote 1: _Oriental Monachism,_ 8vo. London, 1850; and _A Manual of Buddhism,_ 8vo. London, 1853] In like manner I have had the advantage of communicating with MR. COOLEY (author of the _History of Maritime and Inland Discovery_) in relation to the _Mediæval History_ of Ceylon, and the period embraced by the narrative of the Greek, Arabian, and Italian travellers, between the fifth and fifteenth centuries. I have elsewhere recorded my obligations to Mr. WYLIE, and to his colleague, Mr. LOCKHART of Shanghæ, for the materials of one of the most curious chapters of my work, that which treats of the knowledge of Ceylon possessed by the Chinese in the Middle Ages. This is a field which, so far as I know, is untouched by any previous writer on Ceylon. In the course of my inquires, finding that Ceylon had been, from the remotest times, the point at which the merchant fleets from the Red Sea and the Persian Gulf met those from China and the Oriental Archipelago; thus effecting an exchange of merchandise from East and West; and discovering that the Arabian and Persian voyagers, on their return, had brought home copious accounts of the island, it occurred to me that the Chinese travellers during the same period had in all probability been equally observant and communicative, and that the results of their experience might be found in Chinese works of the Middle Ages. Acting on this conjecture, I addressed myself to a Chinese gentleman, WANG TAO CHUNG, who was then in England; and he, on his return to Shanghæ, made known my wishes to Mr. WYLIE. My anticipations were more than realised by Mr. WYLIE'S researches. I received in due course, extracts from upwards of twenty works by Chinese writers, between the fifth and fifteenth centuries, and the curious and interesting facts contained in them are embodied in the chapter devoted to that particular subject. In addition to these, the courtesy of M. STANISLAS JULIEN, the eminent French Sinologue, has laid me under a similar obligation for access to unpublished passages relative to Ceylon, in his translation of the great work of HIOUEN THSANG; in his translation of the great work of HIOUEN