This book was written based on notes from which the author gave lectures. Consequently, words may have multiple spelling variations or inconsistent hyphenation. These have been left unchanged unless indicated below. Obsolete spelling was retained. Obvious printing errors, such as backwards, upside down, reversed, dropped, or partially printed letters and punctuation, were corrected. Repeated words over line breaks were removed. An ñ was substituted for an n with a macron. Words and phrases in italics are surrounded by underscores, _like this_. Those in bold are surrounded by equal signs, =like this=. Sidenotes are surrounded by diamonds, ♦ like this. ♦ Final stops missing at the end of sent…
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