Transcriber’s notes:

The text of this e-book has been preserved in its original form apart from correction of several typographic errors ([listed] at the end). Inconsistent spelling, punctuation and chapter numbering (mixed Arabic/Roman numerals) remain as in the original. Some illustrations have been moved nearer to the relevant text. A black dotted underline indicates a hyperlink to a page or illustration (hyperlinks are also highlighted when the mouse pointer hovers over them). Page numbers are shown in the right margin.