The Commens Dictionary
Quote from ‘Lowell Lectures on The Logic of Science; or Induction and Hypothesis: Lecture IX’
An index represents its object by a real correspondence with it - as a tally does quarts of milk, and a vane the wind. [—] An index is a representation whose relation to its object is prescidible and is a Disquiparence, so that its peculiar Quality is not prescindible but is relative.
‘Index’ (pub. 04.05.13-17:57). Quote in M. Bergman & S. Paavola (Eds.), The Commens Dictionary: Peirce's Terms in His Own Words. New Edition. Retrieved from http://www.commens.org/dictionary/entry/quote-lowell-lectures-logic-science-or-induction-and-hypothesis-lecture-ix-0.