TRANSCRIBER’S NOTE

These lectures each had a set of associated slides, a completelist of which can be found on pages 117–124 at the end of the book.These slide sets were sold separately and are not part of the book.Some of the slides (those highlighted in bold in the slide list) wereinserted as illustrations in the original book, and these are reproduced in this etext.

The numbers in the right margin of the etext are the numbers ofthe associated slides. Several of these margin slide numbers are in parentheses ( ) toindicate that this particular slide is being shown for a second time at this point inthe lecture. These margin slide numbers, like the page numbers, are only displayedon browsers; they are not displayed on handheld ereader devices.

If the window viewing size is made very wide, some slide numbersmight be overlaid on the next one; keeping the text width less than 120 charactersshould avoid this.

The original book showed all the slide numbers as sidenotes in the outermargin of the text. These are not displayed on ereaders, but can be viewed in the .htm and .txtversions of the etext.

There are no Footnotes in this book.

Some minor changes to the text are noted at the end of the book.