Logic: Deductive and Inductive
Chapter 6
CONDITIONS OF IMMEDIATE INFERENCE
Sec.1. Meaning of Inference 69 Sec.2. Immediate and Mediate Inference 70 Sec.3. The Laws of Thought 72 Sec.4. Identity 73 Sec.5. Contradiction and Excluded Middle 74 Sec.6. The Scope of Formal Inference 76