Transcriber’s Notes

Retained publication information from the printed edition: this eBook is public-domain in the country of publication. Relocated all image captions to be immediately under the corresponding images, removing s references like “preceding page”. Silently corrected a few palpable typos. Added separate “Guide and Advisor” Table of Contents to the main Table. Collated Table of contents against actual headings; added several headings to match the Table. In the text versions only, text in italic font is delimited by _underscores_.