Transcriber’s Note
Inconsistencies in spelling, hyphenation, etc. and unusual spelling have been retained.
Page 162 and 163, tables: as printed in the source document, although they obviously contain several errors.
Changes made
Illustrations have been moved out of text paragraphs.
Some minor typographical and punctuation errors have been corrected silently.
The illustration numbers in the List of Illustrations have been added by the transcriber.