Page 180, Footnote 36: there probably should have been a closing quote mark after ... exercises of humanity.
Page 327, Endnote [E31]: there is no marker in the text for this note.
Page 400, Minnesota, Minn.: as printed in the source document; probably an error for Minneapolis, Minn.
Page 464, Zenophon: the text consistently uses Xenophon.
Changes:
Illustrations and footnotes have been moved out of text paragraphs.
Some obvious minor typographical and punctuation errors have been corrected silently.
Table of Contents: Several page numbers have been corrected to the book’s actual page numbers.
Page 6, Endnote 1: closing quote mark inserted after ... principles of scientific education.
Page 13: closing quote mark inserted after ... be learned by doing them.