As I turn to write this Prefaee to another volume of papers presented at the Annual Conferenee on Adhesion and Adhesives, I am reflecting on how fortuna te we are to he ahle to eontinue to attraet hoth speakers and audienee of such high standard year after year. This field of scienee and technology continues to grow in size and importance, so that it is not so surprising that those interested from a very eonsiderahle range of countries and diseiplines are willing to come together and spend a couple of days each year exchanging ideas and views, hoth formally and informally. So, once again, I can and must express thanks to all those who have made this volume possihle: hoth those who presented the papers, and then rewrote them for puhlication, and those who through their attendance made the conference a vi ahle reality. K. W. ALLEN v Contents v PreJace.