Footnotes
Reading edition
Transcriber’s Notes
Some inconsistencies in spelling, hyphenation, and punctuation have been retained.
Two charts have been rendered here only in image form. They were too visually complex to format as HTML tables.
“STANDARD SCHEME OF DESCENT” just after the Table of Contents
“Illustrations of the Herbert Spencer Lecture 1907.” on p. 72.
Some tables are wide and may display poorly.