These books consisted of one long sheet of a kind of paper made by macerating and beating together the leaves of the maguey, and afterwards sizing the surface with a durable white varnish. The sheet was folded like a screen, forming pages about 9 × 5 inches. Both sides were covered with figures and characters painted in various brilliant colors. On the outer pages boards were fastened, for protection, so that the completed volume had the appearance of a bound book of large octavo size. Instead of this paper, parchment was sometimes used. This was made from deerskins, thoroughly cured and also smoked, so that they should be less liable to the attacks of insects. A very durable substance was thus obtained, which would resist most agents of destruction, even in a tropical climate. Twenty-seven rolls of such parchment, covered with hieroglyphics, were among the articles burned by Bishop Landa, at Mani, in 1562, in a general destruction of everything which related to the ancient life of the nation. He himself says that he burned all that he could lay his hands upon, to the great distress of the natives.[65-1] A very few escaped the destructive bigotry of the Spanish priests. So far as known these are.-- 1. The Codex Tro, or Troano, in Madrid, published by the French government, in 1869. 2. What is believed to be the second part of the Codex Troano, now (1882) in process of publication in Paris. 3. The Codex Peresianus, in the National Library, Paris, a very limited edition of which has been issued. 4. The Dresden Codex, in Kingsborough's Mexico, and photographed in colors, to the number of 50 copies, in 1880, which is believed to contain fragments of two different manuscripts. To these are, perhaps, to be added one other in Europe and two in Mexico, which are in private hands, and are alleged to be of the same character. All the above are distinctly in characters which were peculiar to the Mayas, and which are clearly variants of those found on the sculptured beams and slabs of Uxmal, Chichen Itza, Palenque and Copan. It is possible that many other manuscripts may be discovered in time, for Landa tells us that it was the custom to bury with the priests the books which they had written. As their tombs were at times of solid stones, firmly cemented together, and well calculated to resist the moisture and other elements of destruction for centuries, it is nowise unlikely that explorations in Yucatan will bring to light some of these hidden documents. The contents of these books, so far as we can judge from the hints in the early writers, related chiefly to the ritual and calendar, to their history or Katuns, to astrological predictions and divinations, to their mythology, and to their system of healing disease. § 9. _Modern Maya Manuscripts._