At one time these degrees were awarded only for the completion of research work, but over the past 20 years or so a large number of additional Master degrees have been introduced which combine a quite small piece of research with a substantial amount of course work on which the student is examined. The PhD, the most prestigious research degree, is on the other hand only awarded for a piece of research which shows great depth and considerable originality. It is expected to make a significant contribution to our knowledge of and understanding of a problem. It usually involves at least four years full-time research. Thirdly, and least commonly, there are the honorarily degrees. These are, for example, the DLitt or Doctor of Letters, Doctor Litterarum, if you want it in the original Latin, the DSc or Doctor of Science, and the LLD or Doctor of Laws. These awards may be, in fact often are, awarded to people who never been to University at all. They are very often in fact given to people who have distinguished themselves in some field of non-academic activity outside. Thus the University may wish to honour a famous writer by giving him a DLit or a famous politician by giving him or her an LLD. That's all I want to talk about today. Are there any questions?