It would be too long to give here the details of my work and investigations. Enough to say, that from the 28th of September, 1875, when I began to study the monuments, up to the 5th of January, 1876, when, learning of the prohibitive laws I have already mentioned, and that on account of the better requirements of the service I was to disarm my men, I interrupted my works; that is to say, in one hundred days I have made scrupulously exact plans of the principal edifices, discovering that their architects made use, in those remote times, of the metrical measure with its divisions. I have made five hundred stereoscopic views, from which I have selected eighty, equal to those that accompany this writing; I have discovered hieroglyphics which I have caused to reappear intact, and taken photographs of some that are said to be a prophecy of the establishment of the electric telegraph between _Saci_ (Valladolid of to-day), and _Ho_ (Mérida); I have restored mural paintings of great merit for the drawing, and for the history they reveal; I have taken exact tracings of the same which form a collection of twenty plates, some nearly one meter long; I have discovered bas-reliefs which have nothing to envy in the bas-reliefs of Assyria and Babylon; and, guided by my interpretations of the ornaments, paintings, &c., &c., of the most interesting building in Chichen (historically speaking), I have found amidst the forest, eight meters under the soil, a statue of Chaacmol, of calcareous stone, one meter, fifty-five centimeters long, one meter, fifteen centimeters in height, and eighty centimeters wide, weighing fifty kilos, or more; and this I extracted without other machine than that invented by me, and manufactured from trunks of trees with the _machete_ of my Indians. I have opened two leagues of carriage road to carry my findings to civilization; and finally I have built a rustic cart in which to bring the statue to the high road that leads from Ɔitas to Mérida. This statue, Mr. President, the only one of its kind in the world, shows positively that the ancient inhabitants of America have made, in the arts of drawing and sculpture, advances, equal at least to those made by the Assyrian, Chaldean and Egyptian artists.