The text comprises a series of letters in three groups. The first group, the first letter within that group, and the third group, lack headings. Appropriate headings have been copied from the Table of Contents and inserted on pages 25 and 468. Apparent typographical errors have been corrected as has inconsistent hyphenation.…
Or read it translated: 日本語 · 中文 · हिन्दी · Español · العربية · Français · বাংলা · Português · Русский · Bahasa Indonesia · اردو · Deutsch · Kiswahili · 한국어