[peirce-l] Re: If a valence of four had been known to Peirce, would he have constructed a logic of firstness, secondness, thirdness and fourthness?

Ben / Gary: Thank you both for your responses. Very helpful on several issues. Gary, the quotes you sent indicate substantial shifts of Peirce's views as chemical knowledge developed in the second half of the 19th Century. If one is interested in further developments, one should compare

[peirce-l] Re: If a valence of four had been known to Peirce, would he have constructed a logic of firstness, secondness, thirdness and fourthness?

Jean-MarcOrliaguet quoted Peirece: "Thus, the relation between the four bonds of an unsymmetrical carbon atom consists of twenty-four triadic relations". Dear Jean-Marc, Earlier I characterized the Carbon Hydrogen bonds in Methane as dyadic and suggested Peirce would have done the