The Commens Dictionary
Quote from ‘Existential Graphs’
A heavily marked uninterrupted line on the sheet of assertion, having two extremities and no branching shall be called a line of identity and shall be a graph asserting the identity of all the individuals denoted by its points (all which being heavily marked denote individuals).
MS [R] S28:47
‘Line of Identity’ (pub. 18.03.18-14:21). 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-existential-graphs-9.