Arrived in Spain, Hernandez suffered the severest blow possible for an author--instead of his great work being put promptly to press, as he had expected, it was buried in the shelves of the library of the Escorial; to be sure with all honor, for the volumes were ‘beautifully bound in blue leather and gilded and supplied with silver clasps and corners, heavy and excellently worked.’ However, this magnificent dress did not serve to protect the work, which finally perished, almost a century later, in the great conflagration of the Escorial, which took place the 7th and 8th of June, 1671, nothing being saved except a few drawings, just enough to augment our appreciation of the loss. Dr. Hernandez survived his return little more than nine years, since he died February 28, 1587. AGUSTIN RIVERA. [Illustration] Agustin Rivera was born at Lagos (Jalisco) on February 28, 1824. For a time he studied at the famous _Colegio de San Nicolas_, at Morelia, and, later, at the _Seminario_ in Guadalajara. In 1848 he was licensed to practice law and in the same year took holy orders. He taught for some time at Guadalajara, and was, for nine years, the attorney of the Ecclesiastical Curia. He finally removed to Lagos, the city of his birth, where he still lives, and where his writings have been published. In 1867, he made a journey to Europe, visiting England, France, Italy, and Russia. His writings have been many, varied, and extensive; the complete list of his books and pamphlets, includes ninety-four titles. Among the best known and most widely mentioned are his _Compendio de la Historia antigua de Mexico_ (Compend of the Ancient History of Mexico), _Principios criticos sobre el vireinato de la Nueva España_ (Critical Observations upon the Vice-Royalty of New Spain), and _La Filosofía en Nueva España_ (Philosophy in New Spain). Two pamphlets, _Viaje á las Ruinas de Chicomoztoc_ (Journey to the Ruins of Chicomoztoc) and _Viaje á las Ruinas del Fuerte del Sombrero_ (Journey to the Ruins of the Fort of Sombrero), have been widely read and are often mentioned.