The Commens Dictionary
Quote from ‘Definitions for Baldwin's Dictionary [R]’
An index is a representamen which refers to its object in a quasi-physical way, independently of whether there is an interpretant or not.
MS [R] 1147
‘Index’ (pub. 10.08.17-14:50). 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-definitions-baldwins-dictionary-r-8.