Spiral Paintings are made by a compositional system of squares. I start on two opposite sides and move towards a centerline. I use a numeric system of expansion to double both the units and the spaces in between, making the pattern “grow” exponentially. In White Spiral the two sides come together and join. (This was an outcome I could not predict.) In Black Spiral, the two sides never touch. I got the idea of the “Spiral” after I went to Mary Heilmann’s studio and she showed me what she called her “Smithson” painting.