It was in 1960 when I first met Professor Syoten Oka in Tokyo, after a Special Lecture I gave on 'Hemorheology An Introduction', with George W. Scott Blair as co-author, before the 8. Congress of the International Society on Blood Transfusion (1). I was surprised to see Professor Bun'ichi Tamamushi, the colloid and surface chemist, whom I had met a few years earlier in England and thereafter at the 3. International Congress on Rheology, held in 1958 at Bad Oeynhausen, Germany. He introduced me to the physicist Syoten Oka and two of his associates immediately following the lecture. Professor Eiichi Fukada.