Obvious punctuation and spelling errors and inconsistent hyphenations have been corrected.

Page numbers for blank pages, and pages consisting entirely of illustration, are not visible.

For added clarity, parentheses were added to some of the equations.

The oe and ae ligatures in the text have been left as they appear in the original book. If these, or the various mathematical symbols, do not display properly, you may have an incompatible browser or unavailable fonts. Make sure that the browser's "character set" or "file encoding" is set to Unicode (UTF-8). You may also need to change your browser's default font.

The remaining corrections made are indicated by lines under the corrections. Scroll the mouse over the word and the original text will be displayed.

In ambiguous cases, the text has been left as it appears in the original book.