This annihilation of their sacred books affected the natives most keenly, as we are pointedly informed by Bishop Landa, himself one of the most ruthless of Vandals in this respect.[5-++] But already some of the more intelligent had learned the Spanish alphabet, and the missionaries had added a sufficient number of signs to it to express with tolerable accuracy the phonetics of the Maya tongue. Relying on their memories, and, no doubt, aided by some manuscripts secretly preserved, many natives set to work to write out in this new alphabet the contents of their ancient records. Much was added which had been brought in by the Europeans, and much omitted which had become unintelligible or obsolete since the Conquest; while, of course, the different writers, varying in skill and knowledge, produced works of very various merit. Nevertheless, each of these books bore the same name. In whatever village it was written, or by whatever hand, it always was, and to-day still is, called "The Book of Chilan Balam." To distinguish them apart, the name of the village where a copy was found or written, is added. Probably, in the last century, almost every village had one, which was treasured with superstitious veneration. But the opposition of the _padres_ to this kind of literature, the decay of ancient sympathies, and especially the long war of races, which since 1847 has desolated so much of the peninsula, have destroyed most of them. There remain, however, either portions or descriptions of not less than sixteen of these curious records. They are known from the names of the villages respectively as the Book of Chilan Balam of Nabula, of Chumayel, of Kaua, of Mani, of Oxkutzcab, of Ixil, of Tihosuco, of Tixcocob, etc., these being the names of various native towns in the peninsula. When I add that not a single one of these has ever been printed, or even entirely translated into any European tongue, it will be evident to every archaeologist and linguist what a rich and unexplored mine of information about this interesting people they may present. It is my intention in this article merely to touch upon a few salient points to illustrate this, leaving a thorough discussion of their origin and contents to the future editor who will bring them to the knowledge of the learned world.