From the editor

Abstract

For a number of reasons, one of the foremost being Professor Page's retirement from the University, the Department's Journal has regretfully been languishing for a while. However, it is hoped that from now on we will be able to publish the Journal, as in the past, on a regular twice yearly basis. Our regular readers will notice that the Journal has un­dergone certain changes, particularly with respect to the name. This change does not imply any fundamental change in policy; it is rather an adjustment to reflect more accurately the nature of the Journal as it has evolved over the years. As both the purpose and objectives of the Journal remain basically unchanged it was decided to retain the numbering system and hence the numbers will follow on sequentially from the previous issue of the Journal.