P. A. Stone: >Oh, and Phil! ---- Yet, I don't think I'd buy Henninge's argument to the effect that fractals (such beautiful things) are computer-generated only. And add Mandelbrot to Stone's list: "In the 1960s, Benoît Mandelbrot started investigating self-similarity in papers such as How Long Is the Coast of Britain? Statistical Self-Similarity and Fractional Dimension, which built on earlier work by Lewis Fry Richardson. Finally, in 1975 Mandelbrot coined the word "fractal" to denote an object whose Hausdorff–Besicovitch dimension is greater than its topological dimension." Speranza --- Speranza