Obvious typographical errors and printer errors have been corrected without comment. Other than obvious errors, the spelling, grammar, and use of punctuation are preserved as they appear in the original publication.
Inconsistencies in spelling which remain unchanged include:
rutte/ ruttes and ruttee/ ruttees
In addition to obvious errors, the following changes were made:
1. Page 15: changed "it" to "is" in the phrase, "... first thing to do is to find...."
2. Page 140: changed "it" to "is" in the phrase, "... is to visualize...."
3. On page 75 there was no closing quote mark to match the opening quote at the phrase, "As Priestly says: "In a poem,..." A closing quote mark was added at the end of this sentence.