This delightful painting, one of the gems of the Althorp collection, is considered to be one of the master's greatest achievements in full-length portraits. [Illustration: PLATE VI.--THE DUCHESS OF DEVONSHIRE] In London Gainsborough came into personal contact with Sir Joshua Reynolds, probably for the first time, although from a note of Walpole in his catalogue of the Royal Academy of 1773 it would appear that they had been in touch with one another some years previously, Walpole's words being: "Gainsborough and Dance, having disagreed with Sir Joshua Reynolds, did not send any pictures to this exhibition." When the Academy was founded in 1768 Gainsborough was one of the original members, and to the first four exhibitions he sent from Bath seventeen portraits and fifteen landscapes. Then for four years, no doubt on account of the disagreement mentioned by Walpole, he exhibited nothing until 1777, when his name reappears in the catalogue with portraits of the Duke and Duchess of Cumberland. The vogue of Gainsborough was now at its height, and a long series of portraits of royal personages began to occupy his easel. It was one of these which, a few years later, led to his final quarrel with the Royal Academy. To the exhibition of 1783 he had sent eight portraits and portrait groups, including one of the three "Eldest Princesses." He sent the frames only in the first instance, but kept back that of the princesses, the king and queen having expressed a wish to view the picture before it was sent to the Academy. There was then a rule of the exhibition, one which is still in force, that full-length portraits could not be hung on the line, and by some misapprehension, it must have been thought by the hanging committee that this was a full-length group. Gainsborough must have heard of the place which had been assigned to it, and he sent the following curt note to Somerset House, where the Royal Academy exhibitions were then held:-- "_Mr. Gainsborough presents his Compliments to the Gentlemen appointed to hang the pictures at the Royal Academy, and begs leave to_ hint _to them that if the Royal Family, which he has sent for this Exhibition (being smaller than three-quarters), are hung above the line along with full-lengths, he never more, whilst he breathes, will send another Picture to the Exhibition._ _This he swears by God._ _Saturday morn._" This letter did not have the desired effect, so Gainsborough withdrew his pictures and never exhibited again. It would appear that such a quarrel, obviously the result of a misunderstanding, could easily have been adjusted by the President, had he felt inclined to interfere; but Sir Joshua evidently preferred to let matters take their course, and so the break became permanent.