The Gulf Stream, infrared detail

AAn infrared image of the graphite underdrawing for The Gulf Stream (figure b). In the infrared view, faint pencil lines run across the lower portion of the boat deck from lower left (near the shark’s fin) to upper right, ending halfway up the stern. Two more faint lines arch outward from a drain in the back of the boat, which is pictured as a rectangle near the center of the stern. These were meant to indicate the water’s higher level on the deck and its consequent flow out …