The Commens Dictionary
Quote from ‘The Branches of Geometry; Existential Graphs [R]’
Abstraction names two wholly different operations. One of them consists in supposing some feature of the fact to be absent, or at least leaving it out of account. I call that prescissive abstraction.
MS [R] 96
‘Prescission’ (pub. 24.11.15-16:37). 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-branches-geometry-existential-graphs-r-1.