Already, in an earlier sketch, it has been stated that the Academy has, by preference, from the days of its establishment, dedicated itself to the discussion of the additions and emendations which should be made to the Dictionary of the language. It persevered in this laborious task until the month of August, 1884, when it remitted to the Royal Academy the nineteenth and final list of items for the Dictionary. The definitions proposed by this Academy were twelve hundred and eighty-five in number; of these, six hundred and fifty-two were accepted by the Spanish Academy, some with slight modification, and six hundred and thirty-three were not admitted, the greater part of these being our provincialisms. It is necessary to admit that the harvest gathered is not large; but, though so scanty, it gave occasion to mature studies, and long discussions, of all of which there remains no other vestige than the brief notice recorded in the proceedings of the meetings. It can be readily understood that, as the Dictionary invades the domains of the sciences and of philosophy, of the arts and industries, we were forced often to discuss topics so heterogeneous that the only points they had in common were the initial letters of their names. Thus, from the word _Prostesis_, we passed to study the word _Positivismo_, considered as the name of a school of philosophy. The mere exposition of this system and its definition occupied long and serious sessions. Equally long and exhaustive were the discussions of the definitions of one and another science, as that of Biology and that of Astronomy, or those fixing the acceptations of technical scientific and philosophic terms. Such discussions were often interrupted by dissertations and discourses upon points of Literature, Philology, and the History of our Literature. Some of these productions have been printed in two preceding volumes of the Memoirs. The Academy has also undertaken to discover and bring together materials for forming the history of the national literature and an example of this activity is the article entitled _Francisco Terrazas and other poets of the Sixteenth Century_. Señor Don Francisco Pimentel, member _de numero_ of this corporation has taken the lead in this and has, unaided, written that history and has begun to print it.