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English-language translations of Ὄργανον include:

Entire translation worksEdit

Organon (Owen)
Unannotated Aristotelian texts: . Annotated texts and supplements: 

Taken separatelyEdit

CategoriesEdit

(Latin: Categoriae)
Introduces Aristotle's 10-fold classification of that which exists. These categories consist of substance, quantity, quality, relation, place, time, situation, condition, action, and passion

Categories (Owen) (trans. O. F. Owen) (1853)  
Categories (Owen)/annotated (trans. O. F. Owen) (1853)  

On InterpretationEdit

(Latin: De Interpretatione)
Introduces Aristotle's conceptions of proposition and judgement, and treats contrarieties between them. It contains Aristotle's principal contribution to philosophy of language. It also discusses the problem of the futures contingents.

On Interpretation (trans. O. F. Owen) (1853)   (or De Interpretatione)

Prior AnalyticsEdit

(Latin: Analytica Priora)
Introduces his syllogistic method, which is discussed in the article on term logic, argues for its correctness, and discusses inductive inference.

Prior Analytics (trans. O. F. Owen) (1853)   (or Analytica Priora)

Posterior AnalyticsEdit

(Latin: Analytica Posteriora)
Discusses correct reasoning in general.

Posterior Analytics (Owen) (trans. O. F. Owen) (1853)  
Posterior Analytics (Bouchier) (trans. E. S. Bouchier) (1901)  

TopicsEdit

(Latin: Topica)
Treats issues in constructing valid arguments, and inference that is probable, rather than certain. It is in this treatise that Aristotle mentions the idea of the Predicables, which was later developed by Porphyry and the scholastic logicians.

Topics (trans. O. F. Owen) (1853)  

On Sophistical RefutationsEdit

(Latin: De Sophisticis Elenchis)
Gives a treatment of logical fallacies, and provides a key link to Aristotle's work on rhetoric.

The Sophistical Elenchi (trans. O. F. Owen) (1853)