Before revision: Peirce's writings do not address this question, because first-order logic was first clearly articulated only some years after his death, in the 1928 first edition of David Hilbert and Wilhelm Ackermann's Principles of Mathematical Logic.
After revision: Peirce's writings do not address this question, because first-order logic was first clearly articulated only after his death, in the 1928 first edition of David Hilbert and Wilhelm Ackermann's Principles of Mathematical Logic.