Transcriber’s Notes:
Footnotes have been moved to the end of the text just before the index and relabeled consecutively through the document.
Illustrations have been moved to paragraph breaks near where they are mentioned.
References in the text to illustrations have been standardized.
Sidenotes originally appearing near the start of a paragraph are positioned at the beginning of the paragraph; sidenotes in the middle of long paragraphs are positioned near the relevant sentences.
Depending on the display device, sidenotes may be in shaded boxes, on lines of their own, or mid-paragraph, enclosed in |vertical lines|.
Punctuation has been made consistent.
Variations in spelling and hyphenation were retained as they appear in the original publication, except that obvious typographical errors have been corrected.