His early works were installations made of found materials, like the plastic detritus of domestic goods.
I was particularly taken by Sheila Hale's sculptural installations made of carved and shredded books.
Jim Lambie's wild floor installations, made of multicoloured duct tape that zigzags its dazzling way round every corner, are reprised at the Fruitmarket Gallery.
So they experimented with new forms, materials and content: smoke paintings, kinetic art, rotating installations made of nails, glass or aluminium, black-and-white grid-like patterns and artificial light.
The snakes were an unexpected part of a series of seven art installations made of shredded tires, which the artist, Steven Siegel, had assembled in his studio in Dutchess County, north of New York City.
One is a series of installations made of recycled materials by students from Central Saint Martins, and the other is the Imagination Playground, a kit of parts designed by the Rockwell Group, which children can assemble like a giant puzzle.
