When italics were used in the original book, the corresponding text has been surrounded by _underscores_, and when boldface text was use, the corresponding text has been surrounded by =equal signs=. In two instances, the letter N has been printed with a macron above it. This has been represented as [=N]. Superscripted letters have been preceded by ^ and when multiple letters are superscripted they have been surrounded by {}. Subscripted letters and numbers have been preceded by _ and surrounded by {}. Fractions have been separated from whole numbers preceding them with a dash such that 1-1/2 represents one and one half. The letters represented as H./W.E. were originally printed with the H. d…
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