Recording of Fourth Lecture:

Original PowerPoint slides:

Segment 1: lect4.ppt
Segment 2: lect4b.ppt
The entire file without voice commentary: lect04.ppt

HTML slides (Internet Explorer 5 needed):

Segment 1: lect4.htm
Segment 2: lect4b.htm

NB: Software needed: Internet Explorer 5 & Windows Media Player. (Many new computers have both of these already installed, but if they are not in your system, you can download them from the Microsoft website at

The CD-Rom for the lecture (2 copies) has already been distributed. Please get in touch with one of the borrowers if you want to get hold of it.