(12) A _fact_ is a single, individual, particular thing made or done. A _truth_ is general knowledge which exactly conforms to the facts. A truth may be a definition, rule, law, or principle. (13) A _fact_ as opposed to hypothesis is an occurrence which is true beyond doubt. An _hypothesis_ is a supposition advanced to explain an occurrence or a group of occurrences. A _theory_ is a general hypothesis which has been partly verified. (14) _Theory_ as opposed to practice means _general knowledge_, while practice involves the putting into operation one’s theories. (15) A _fact_ as opposed to phenomenon is something accomplished. A phenomenon is something shown. (16) A _method-whole_ is any subdivision of the matter for instruction which leads to a generalization. (17) _Method_ is an orderly procedure according to a recognized system of rules and principles. As the term is commonly used it includes not only the arrangement of the subject matter for instruction but the mode of presenting the same to the mind. (18) _Induction_ is the process of proceeding from the less general to the more general. _Deduction_ is the process of proceeding from the more general to the less general. (19) The terms induction and deduction may have reference to forms of reasoning or to methods of teaching. The _inductive method_ is the method of deriving a general truth from individual instances. The _deductive method_ is the method of applying a general truth to individual instances. The inductive method is objective, while the deductive method is subjective. Induction is the method of discovery; deduction is the method of instruction. (20) _Analysis_ is the process of separating a whole into its related parts. _Synthesis_ is the process of uniting the related parts to form the whole. (21) The _analytic method_ is the method of proceeding from the whole to the related parts. The _synthetic method_ is the method of proceeding from the related parts to the completed whole. (22) Analysis and synthesis deal with _single things_, while induction and deduction are concerned with _classes of things_. (23) The _complete method_ consists of three elements: (1) induction, (2) deduction, (3) verification or proof. When the emphasis is placed on the inductive phase, the complete method is sometimes termed the development method. =10. OUTLINE.= DEFINITION. (1) Importance. (2) The Predicables. Genus――species――summum genus――infima species. Proximate Genus. Genus and Species of Natural History. Genus, Double meaning of Differentia. Property. Accident. Separable, Inseparable. (3) Nature of Definition. (4) Definition and Division Compared.