While implementing the Surrealist directive of eliciting the unconscious, and intent on generating an extensive vocabulary of unbroken, free-flowing lines, Jackson Pollock felt his ambitions frustrated by two constraints endemic to conventional easel painting: the interruption of the creative act caused by the inconvenient need to reload the brush and the drag on his hand as he spread pigment along the canvas surface. Initially, Pollock tried to circumvent these impedimenLs by squeezing paint directly from the tube. This adjustment allowed him to dispense larger amounts of pigment than could otherwise be held on-and eliminated the necessity to reload-the brush. But forcing paint out of …