A treatise like his _Libro de Caza_ (Book of Hawking), recently recovered by Professor Baist, needs but to be mentioned to indicate its aim. His histories are mere epitomes of Alfonso's chronicle. The _Libro del Caballero et del Escudero_ (Book of the Knight and Squire), in fifty-one chapters, of which some thirteen are missing, is a didacticism, a _fabliella_, modelled upon Ramón Lull's _Libre del Orde de Cavallería_. A hermit who has abandoned war instructs an ambitious squire in the virtues of chivalry, and sends him to court, whence he returns "with much wealth and honour." The inquiry begins anew, and the hermit expounds to his companion the nature of angels, paradise, hell, the heavens, the elements, the art of posing questions, the stuff of the planets, sea, earth, and all that is therein—birds, fish, plants, trees, stones, and metals. In some sort the _Tratado sobre las Armas_ (Treatise on Arms) is a memoir of the writer's house, containing a powerful presentation of the death of Juan Manuel's guardian, King Sancho, passing to eternity beneath his father's curse. Juan Manuel follows Sancho's example by preparing twenty-six chapters of _Castigos_ (Exhortations), sometimes called the _Libro infinido_, or Unfinished Book, addressed to his son, a boy of nine. He reproduces Sancho's excellent manner and sound practical advice without the flaunting erudition of his cousin. The _Castigos_ are suspended to supply the monk, Juan Alfonso, with a treatise on the _Modes of Love_, fifteen in number; being, in fact, an ingenious discussion on friendship. Juan Manuel is seen almost at his best in his _Libro de los Estados_ (Book of States), otherwise the _Book of the Infante_, and thought by some to be the missing _Book of Sages_. The allegorical didactic vein is worked to exhaustion in one hundred and fifty chapters, which relate the education of the pagan Morován's son, Johas, by a certain Turín, who, unable to satisfy his pupil, calls to his aid the celebrated preacher Julio. After interminable discussions and resolutions of theological difficulties, the story ends in the baptism of father, son, and tutor. Gayangos gives us the key; Johas is Juan Manuel; Morován is his father, Manuel; Turín is Pero López de Ayala, grandfather of the future Chancellor; and Julio represents St. Dominic (who, as a matter of fact, died before Juan Manuel's father was born). This confused philosophic story, suggestive of the legend of Barlaam and Josaphat, is in truth the vehicle for conveying the author's ideas on every sort of question, and it might be described without injustice as the carefully revised commonplace book of an omnivorous reader with a care for form. A postscript to the _Book of States_ is the _Book of Preaching Friars_, a summary of the Dominican constitution expounded by Julio to his pupil. A very similar dissertation is the _Treatise showing that the Blessed Mary is, body and soul, in Paradise_, directed to Remón Masquefa, Prior of Peñafiel.