" Others, faced with Turner's competitiveness were less contented. C.R. Leslie was on hand when Turner's Helvoetsluys, to start with "a grey pictre, beautiful and true, but with no positive colour in any part of it", was hung next to Constable's Opening of Waterloo Bridge Leslie wrote that Constable's painting looked as if painted with liquid gold and silver, and Turner came several times into the room while Constable was heightening with vermilion and lake the decorations and flags of the city barges. Turner stood behind Constable, looking from "Waterloo" to his own picture, and at last went and got his palette from the Great Room where he had been touching another picture. He then put a round daub of red lead,

"somewhat bigger than a shilling, on his grey sea, [and] went away without saying a word. The intensity of the red lead, made more vivid by the coolness of his picture, caused even the vermilion and lake of Constable to look weak. I came into the room just as Turner left it. "He as been here," Said Constable, "and fired a gun. "

― Anthony Bailey , Standing in the Sun: A Biography of J.M.W.Turner