on Nature; eighteen on Questions of Natural Philosophy; two books, being an Abridgment of Natural Philosophy; eight more books on Natural Philosophy; one treatise addressed to Natural Philosophers; two books on the History of Plants; eight books on the Causes of Plants; five on Juices; one on Mistaken Pleasures; one, Investigation of a proposition concerning the Soul; one on Unskilfully Adduced Proofs; one on Simple Doubts; one on Harmonics; one on Virtue; one entitled Occasions or Contradictions; one on Denial; one on Opinion; one on the Ridiculous; two called Soirees; two books of Divisions; one on Differences; one on Acts of Injustice; one on Calumny; one on Praise; one on Skill; three books of Epistles; one on Self-produced Animals; one on Selection; one entitled the Praises of the Gods; one on Festivals; one on Good Fortune; one on Enthymemes; one on Inventions; one on Moral Schools; one book of Moral Characters; one treatise on Tumult; one on History; one on the Judgment Concerning Syllogisms; one on Flattery; one on the Sea; one essay, addressed to Cassander, Concerning Kingly Power; one on Comedy; one on Meteors; one on Style; one book called a Collection of Sayings; one book of Solutions; three books on Music; one on Metres; the Megades, one; on Laws, one; on Violations of Law, one; a collection of the Sayings and Doctrines of Xenocrates, one; one book of Conversations; on an Oath, one; one of Oratorical Precepts; one on Riches; one on Poetry; one being a collection of Political, Ethical, Physical, and amatory Problems; one book of Proverbs; one book, being a Collection of General Problems; one on Problems in Natural Philosophy; one on Example; one on Proposition and Exposition; a second treatise on Poetry; one on the Wise Men; one on Counsel; one on Solecisms; one on Rhetorical Art, a collection of sixty-one figures of Oratorical Art; one book on Hypocrisy; six books of a Commentary of Aristotle or Theophrastus; sixteen books of Opinions on Natural Philosophy; one book, being an Abridgment of Opinions on Natural Philosophy; one on Gratitude; one called Moral Characters; one on Truth and Falsehood; six on the History of Divine Things; three on the Gods; four on the History of Geometry; six books, being an Abridgment of the work of Aristotle on Animals; two books of Epicheiremes; three books of Propositions; two on Kingly Power; one on Causes; one on Democritus; one on Calumny; one on Generation; one on the Intellect and Moral Character of Animals; two on Motion; four on Sight; two on Definitions; one on being given in Marriage; one on the Greater and the Less; one on Music; one on Divine Happiness; one addressed to the Philosophers of the Academy; one Exhortatory Treatise; one discussing how a City may be best Governed; one called Commentaries; one on the Crater of Mount Etna in Sicily; one on Admitted Facts; one on Problems in Natural History; one, What are the Different Manners of Acquiring Knowledge; three on