On one occasion [1840's] I had the audacity to ask him [Turner] if he painted his clouds from nature.. .The words had hardly passed my lips when I saw my gaucherie. I was afraid I had roused a thunderstorm; however, my lucky star predominated.. ..after having eyed me for a few moments with a slight frown, he growled out 'How would you have me paint them?' Then seizing upon his fishing-rod, and turning upon his heel, he marched indignantly out of the house to the water's-edge.