2. Footnotes have been moved from the middle of the text to just before
appendix.
3. The following misprints have been corrected:
"the the" corrected to "the" (page 6)
"it" corrected to "its" (page 13)
"on" corrected to "of" (page 28)
"notwithsanding" corrected to "notwithstanding" (page 32)
4. Other than the corrections listed above, printer's inconsistencies in
spelling, punctuation, and ligature usage have been retained.