I have been able to find no inaccuracy in the 1888 edition, which is indeed stated in the introduction to be entirely by mechanical process, without hand intervention; but being reproduced by printer’s ink in black only, not only do the colors not appear, but the chromatic values are actually far inferior to the photographs of 1864. It was stated further by Prof. de Rosny that some features of the MS. had been lost by deterioration in the 25 years previous to his editions of 1887 and 1888, but this I have not been able to verify in any important point. The photographs and the edition of 1888 are to all general purposes identical; but, notwithstanding that the photographs are steadily yellowing by age, the chromatic values are so far superior that I have continually come to find them the court of final decision in doubtful matters. In a very considerable number of instances a close examination of the photographs has suggested the presence of faint lines of color on glyphs or figures, which was entirely indistinguishable in both of the printed editions, and which was yet in every case confirmed, although sometimes with difficulty, by the examination of the original MS. The proved value, as well as the scarcity, of these photographs was so great, that in 1905 I had my set photographed twice, by dry and wet plate processes, and a few copies printed after a careful comparison and selection of the two sets of plates. It is from these that the present edition has grown.[9-*] The present edition, save for the photographs thus reproduced, having been entirely redrawn, and partly restored, it is fitting to detail just what has been done in this respect. At the very beginning of my introduction to Maya studies the enormous burdens placed on research therein at every turn, bore upon me as upon every other student. The subject and its possibilities stimulate enthusiasm to the highest degree; the rewards of success are greater than those of any like problem today; and yet, fifty years since the present Codex was discovered, and thirty years since Dr. Förstemann’s unsurpassable edition of the Dresden Codex, the actual workers on the problem are the barest handful. A few scattered and obscure references amongst the volumes on volumes of Spanish writers, nearly all untranslated, most of them scarce or almost unprocurable, and many not even printed, make up the literature to be searched out. And a few points of decipherment won and safely fixed by the researchers, from Brasseur, de Rosny, Pousse, Brinton and others a generation ago, to Messrs. Bowditch, Seler, Goodman and a few others of today, are all we have--standing out in a wilderness of guesses by many writers, needless of naming.