Chapter II.
Number System Limits 21
Chapter III.
Origin of Number Words 37
Chapter IV.
Origin of Number Words (_continued_) 74
Chapter V.
Miscellaneous Number Bases 100
Chapter VI.
The Quinary System 134
Chapter VII.
The Vigesimal System 176
* * * * *
Index 211






THE NUMBER CONCEPT: ITS ORIGIN AND DEVELOPMENT.







CHAPTER I.