When italics were used in the original book, the corresponding text has been surrounded by _underscores_; bold or larger characters (such as the large numbers in the index) have been surrounded by =equal signs=. Superscripted characters are preceded by ^. Mixed fractions have been displayed with a hyphen between whole number and fraction for clarity. When a fractional number has been used in a range (i.e. one and a half to two and a half), the dash separating the two numbers has been spaced (i.e. 1-1/2 - 2-1/2). 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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