The Disjunctive Syllogism regarded as an Immediate Inference.
§ 770. If no stress be laid on the transition from disjunctive hypothesis to fact, the disjunctive syllogism will run with the same facility as its predecessor into the moulds of immediate inference.
§ 771.
Denial of Antecedent. Subalternation.
Either A is B or C is D, Every