In 1771, the brothers Adam entered into an agreement with the Society for the erection of "a proper building in the Adelphi for the use of the Society and the accommodation of its officers." The first stone was laid by Lord Romney, on March 28, 1772, and the building was opened in 1774. The Great Room, in which are the six famous pictures painted by James Barry, R.A. (1741-1806), between the years 1777 and 1783, is 44 feet in width, 60 feet in depth, and 48 feet in height. The painting of these celebrated pictures is one of the most extraordinary episodes in the history of art. In 1774, the Society of Arts suggested to certain members of the Royal Academy--then newly instituted--that they should paint the interior of the Great Room, and that they should be reimbursed by the public exhibition of the completed works. This proposition was rejected by the academicians, at whose head was Sir Joshua Reynolds, and Barry, as a member, refused the offer. Three years later, however, Barry, having but sixteen shillings in his pocket, applied for permission to execute the work, unaided, and without remuneration. The Society's housekeeper told Benjamin Haydon, the historical painter (1786-1846), that she remembered Barry at work on his frescoes. His violence, she said, was dreadful, his oaths were horrid, and his temper was like insanity. In summer, he started painting at five o'clock, worked until dark, and then etched by lamp-light until eleven at night. Burke and Johnson called once. But no artist dared to brave his wrath. He had his tea boiled in a quart pot, dined on porridge, and drank milk for supper. So poor was the painter that he applied, but in vain, to the Society for a little money, and "an insolent secretary even objected to his charge for colours and models." Subsequently, the Society relented and advanced the artist a hundred pounds. The Society "afterwards indulged him with two exhibitions of his paintings, in 1783 and 1784, which brought him £503, 12s., the Society paying the cost of the exhibitions, which amounted to £174." He was also "rewarded" by the Society with a gold medal. But he had other, and, perhaps, more pleasing recognitions of his talent. That sturdy traveller and philanthropist, Jonas Hanway (1712-1786), came to one of the exhibitions, and the pioneer of the umbrella was so pleased that he insisted upon leaving a guinea instead of the customary shilling. The Prince of Wales gave Barry sittings, and Lord Aldborough declared that the painter had "surpassed Raphael." Lord Romney gave him a hundred guineas for a copy of the heads, and Dr Johnson thought highly of Barry's imaginative powers. "Whatever the hand may have done," he said to Boswell, "the mind has done its part. There is a grasp of mind there which you find nowhere else." Poor, neglected, and half-mad, Barry died at the age of sixty-five. His body lay in state in the Great Room on March 7. He was buried in St Paul's.