(1) Ernst also later practised decalcomania , a process developed by Oscar Dominguez around 1936, which involved rubbing paint arbitrarily between two sheets of paper.(2) There are obvious associations to be made with Ernst's and Tanguy's wet-paint technique, decalcomania .(3) Other imaginative techniques of which he was a leading exponent were frottage (which he invented in 1925) and decalcomania .(4) In each, Krahenbuhl runs a dazzling gamut of painterly techniques: glazing, impasto, scumbling, decalcomania , fluid linear strokes and so on.(5) His range of effects is unusually eloquent; there is something of the monoprint to them, as well as elements of the Surrealist techniques of decalcomania and frottage.