The national delegates to the 12th International Congress on High-Speed Photography, held in Toronto, Canada in 1976, were delighted to receive an invitation from the Japanese delegates to convene in Tokyo during the week of August 20, 1978. Soon, many people were making plans for their attendance and participation. Technical papers have to be written and equipment displays have to be planned. One of the real uses of an International Congress is to force the issue of a preliminary description of one's work. There is nothing like a time deadline to finish a proposed paper! It would be a very good idea to have the complete paper in hand before the summary is written, but who does it that way?