pg-xxiv
CHAPTER III.

_REPRESENTATION OF TWO PROPOSITIONS
OF RELATION, ONE IN TERMS OF x AND m,
AND THE OTHER IN TERMS OF y AND m,
ON THE SAME DIAGRAM._

The Digits "I" and "O" to be used instead of Red and
Grey Counters 50

Rules "

Examples worked "

CHAPTER IV.

_INTERPRETATION, IN TERMS OF x AND y,
OF TRILITERAL DIAGRAM, WHEN MARKED
WITH COUNTERS OR DIGITS._

Rules 53

Examples worked 54

=BOOK V.=

=SYLLOGISMS.=

CHAPTER I.

_INTRODUCTORY._

'=Syllogism=' 56

'=Premisses=' "

'=Conclusion=' "

'=Eliminands=' 57

'=Retinends=' "

'=Consequent=' "

The Symbol ".'." "

Specimen-Syllogisms "

pg-xxv
CHAPTER II.

_PROBLEMS IN SYLLOGISMS._

Sec. 1.

_Introductory._

'=Concrete=' and '=Abstract=' Propositions 59

Method of translating a Proposition from concrete into
abstract form "

Two forms of Problems "

Sec. 2.

_Given a Pair of Propositions of Relation, which contain
between them a Pair of codivisional Classes, and which are
proposed as Premisses: to ascertain what Conclusion, if any,
is consequent from them._

Rules 60

Examples worked fully "

The same worked briefly, as models 64

Sec. 3.

_Given a Trio of Propositions of Relation, of which every
two contain a Pair of codivisional Classes, and which are
proposed as a Syllogism: to ascertain whether the proposed
Conclusion is consequent from the proposed Premisses,
and, if so, whether it is complete._

Rules