_Trios of Abstract Propositions, proposed as Syllogisms: to be examined_ 106 § 7. _Trios of Concrete Propositions, proposed as Syllogisms: to be examined_ 107 § 8. _Sets of Abstract Propositions, proposed as Premisses for Soriteses: Conclusions to be found_ 110 § 9. _Sets of Concrete Propositions, proposed as Premisses for Soriteses: Conclusions to be found_ 112 CHAPTER II. _ANSWERS._ Answers to § 1 125 § 2 126 §§ 3, 4 127 § 5 128 § 6 130 § 7 131 §§ 8, 9 132 pg-xxxi CHAPTER III. _SOLUTIONS._ § 1. _Propositions of Relation reduced to normal form._ Solutions for § 1 134 § 2. _Method of Diagrams._ Solutions for § 4 Nos. 1 to 12 136 § 5 " 1 to 12 138 § 6 " 1 to 10 141 § 7 " 1 to 6 144 § 3. _Method of Subscripts._ Solutions for § 4 146 § 5 Nos. 13 to 24 147 §§ 6, 7, 8, 9 148 to 157 =NOTES= 164 =APPENDIX, ADDRESSED TO TEACHERS= 165 =NOTES TO APPENDIX= 195 =INDEX.= § 1. Tables 197 § 2. Words &c. explained " pg-xxxii pg001 BOOK I. THINGS AND THEIR ATTRIBUTES. CHAPTER I. _INTRODUCTORY._ The Universe contains '=Things=.' [For example, "I," "London," "roses," "redness," "old English books," "the letter which I received yesterday."] Things have '=Attributes=.' [For example, "large," "red," "old," "which I received yesterday."] One Thing may have many Attributes; and one Attribute may belong to many Things. [Thus, the Thing "a rose" may have the Attributes "red," "scented," "full-blown," &c.; and the Attribute "red" may belong to the Things "a rose," "a brick," "a ribbon," &c.]