A System of Logic: Ratiocinative and Inductive, 7th Edition, Vol. I
CHAPTER V. _Of the Import of Propositions.
§ 1. Doctrine that a proposition is the expression of a relation between two ideas 96
2. Doctrine that it is the expression of a relation between the meanings of two names 99
3. Doctrine that it consists in referring something to, or excluding something from, a class 103
4. What it really is 107
5. It asserts (or denies) a sequence, a coexistence, a simple existence, a causation 110
6. --or a resemblance 112
7. Propositions of which the terms are abstract 115