Arguments are of three kinds, Deduction, Induction, and what I call Abduction [—] If the conclusion is accepted because, having been hypothetically propounded as a hypothesis, it predicted that experiments would yield results which they have thereupon been found to yield, the argument is Inductive.
From early/discarded draft
http://www.commens.org/dictionary/entry/quote-minute-logic-chapter-i-intended-characters-treatise-37