This version of the text cannot represent certain typographical effects. Italics are delimited with the ‘_’ character as _italic_. The topic headings were printed in =boldface= type, and are delimited with ‘_’. The original volume promised many illustrations. However, the edition used here had none of them. The List of Illustrations is retained; however, the pages indicated, which were struck out and corrected with hand-written notes, were not valid and have been removed.…
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