1. Tables have been moved from the middle of a paragraph to the closest paragraph break. 2. The original pages included corrections made by hand which have been retained in this e-text. 3. The following misprints have been corrected: "intellegently" corrected to "intelligently" (page 5) 4. Some of the punctuation errors, e.g., comma instead of period, extra period, etc. in the original have been silently corrected while those requiring interpretation have been left as such. 5. The titles listed in the table of contents do not match with the headings in the original text. However, no changes have been made in this e-text for these mismatches. 6. Other than the corrections listed above, printer's inconsistencies in spelling and punctuation have been retained. |