Illustrations have been repositioned between nearby paragraphs. In some cases, they now appear on different pages than the ones in the List of Illustration.
Ambiguous hyphens at the ends of lines were retained.
Page [152]: “one to ten meters” probably is a misprint for “centimeters”.
Page [154]: “in other words” was printed as “others”.
Page [288]: “truly representive” was printed that way.