When italics were used in the original book, the corresponding text has been surrounded by _underscores_ Mixed fractions have been displayed with a hyphen between whole number and fraction for clarity. Superscripted characters are preceded by ^ and when more than one character is superscripted, they are surrounded by {}. Subscripted characters are preceded by an underscore and surrounded by {}. Some corrections have been made to the printed text. These are listed in a second transcriber’s note at the end of the text.…
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