In closing this symposium I have three things to say. The first is to thank you all for your contributions, both in public and outside this lecture theatre. The stars who were expected to shine have not disappointed us; the others of less renown have either had their say or listened and learned. Everyone has worked hard and I thank you all.
The second is the matter of the subject for the next symposium. It will take place in September 1981, probably in Cambridge. We have not yet agreed upon a form of words for the title, but we are fairly well agreed about what we mean. The idea we have is to discuss how we can use our paper science to decide what properties we require from our raw materials and exactly how they should be processed in order to obtain the specified product. Ladies and Gentlemen. Finally it only remains to wish all of you a safe journey home and to hope to meet you all again at our seventh symposium.