E.R. added a note to 116 in MS 611-15 in C. S. Peirce Manuscripts, saying “There appears to be a misspelling on Peirce's part concerning the Greek term for cenoscopy, since the ψ should be replaced by a π (see e.g. EP 2, p. 373). The last Greek letter in the manuscript is difficult to identify, but should be an α.”