Underscores “_” before and after a word or phrase indicate _italics_ in the original text. A single underscore after a symbol indicates a subscript. Carat symbol “^” designates a superscript. Small capitals have been converted to SOLID capitals. Illustrations have been moved so they do not break up paragraphs. Typographical errors have been silently corrected. The numerical references to the NOTES, e. g. [1] have been changed to “(see NOTE x)” in order to avoid confusion with the true footnotes. THE MACMILLAN COMPANY NEW YORK · BOSTON · CHICAGO ATLANTA · SAN FRANCISCO…
Or read it translated: 日本語 · 中文 · हिन्दी · Español · العربية · Français · বাংলা · Português · Русский · Bahasa Indonesia · اردو · Deutsch · Kiswahili · 한국어