Chapter 32

_PROPOSITIONS OF RELATION._

§ 1.

_Introductory._

A =Proposition of Relation=, of the kind to be here discussed, has, for its Terms, two Specieses of the same Genus, such that each of the two Names conveys the idea of some Attribute _not_ conveyed by the other.

[Thus, the Proposition "Some merchants are misers" is of the right kind, since "merchants" and "misers" are Specieses of the same Genus "men"; and since the Name "merchants" conveys the idea of the Attribute "mercantile", and the name "misers" the idea of the Attribute "miserly", each of which ideas is _not_ conveyed by the other Name.

But the Proposition "Some dogs are setters" is _not_ of the right kind, since, although it is true that "dogs" and "setters" are Specieses of the same Genus "animals", it is _not_ true that the Name "dogs" conveys the idea of any Attribute not conveyed by the Name "setters". Such Propositions will be discussed in