Typographical features such as italic and bold fonts are indicated as _italic_ and =bold=. The 'oe' ligature is given as separate characters. Text shown in mixed 'small capital' letters has been shifted to all uppercase. Superscripted letters are prefixed with a carat (^) character. When multiple letters appear as superscripts, they are enclosed in brackets ({}). Illustrations appear as [Illustration: caption] in their approximate positions in the text. There are several decorative illustrations which appear merely as [Illustration]. Two illustrations, on pp. 199 and 204, were labelled No. 127. To resolve this, the second of them, and references to it, were changed to No. 127a.…
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