In the vast mass of unpublished writings by ecclesiastics are comprised the numerous manuscripts by Juan Cajica, an Augustinian who arrived in Peru in 1573. His extensive knowledge of the native languages greatly facilitated his missionary labours, and his diligence and persistence in writing are made abundantly evident by the statement that he produced thirty-two volumes. Twelve of these were designed to be printed in folio, and twenty in quarto, all in Spanish. They were, however, never printed, because, according to Calancha, the publication of them would have cost one hundred thousand pesos, and no fund of that amount was available. They treated extensively of religious instruction and of the doctrines requisite for a knowledge of the Catholic faith. [Sidenote: Juan Pérez de Menacho] [Sidenote: Menacho’s writings] Few writers of Peru achieved greater distinction while living than Padre Juan Pérez de Menacho, who was born in Lima in the last half of the sixteenth century. He studied in the schools of his native city, and entered the Society of Jesus. He was called to a professorship of philosophy in the University of San Marcos in 1601, and served in that office for twenty years. Many statements were current during his life concerning his marvellous memory and profound knowledge, among others that he knew by heart the works of Thomas Aquinas; and these statements were heard not merely in America, but also in Europe, where, referring to him, it was affirmed that the mind of St. Thomas was in Peru. In later centuries he passed to a certain extent out of public knowledge, largely because the bulk of his works were never published.[186] [Sidenote: _El perfecto confesor_] _El perfecto confesor y cura de almas_ was a purely religious book of the middle of the seventeenth century that had a certain vogue in its day. It was written by Juan Machado de Chávez, who was born in Quito, and who was educated in Lima and in his native city. He held various offices in the Church, and was appointed bishop of Popayán in 1651, but died two years later, before assuming the duties of his episcopal office. _El perfecto confesor_ was published in Barcelona in two folio volumes about 1641. In 1661 Francisco Apolinar published in Madrid a summary of Dr. Machado’s works. [Sidenote: Fernando de Vergara] [Sidenote: José de Vergara]