What did Thomas Roseingrave say about Domenico Scarlatti’s harpsichord playing?

Thomas Roseingrave, who likely met Domenico Scarlatti in Venice, later described Scarlatti’s harpsichord playing to the English musicologist Charles Burney. Roseingrave remarked that it sounded as if "ten hundred d—s had been at the instrument," adding that he had never previously heard such passages of execution and effect.1