For eighteen months Harlow remained in the studio of Sir Thomas. A portrait had been painted of Mrs. Angerstein. In this Lawrence had introduced a Newfoundland dog, so skilfully represented as to excite the warmest admiration. Harlow, perhaps, had had a share in the painting of this dog, and he loudly claimed credit for it. He is said even to have intruded himself upon the Angerstein family, and to have represented to them how greatly the success of the picture was due to his exertions. Of course this conduct on the part of a pupil amounted to flat mutiny. Sir Thomas informed of it, sought out his pupil, and said to him: 'You must leave my house immediately. The animal you claim is among the best things _I_ ever painted. Of course you have no need of further instruction from me.' Harlow withdrew abruptly. In a day or two afterwards he was heard of, living magnificently, at the Queen's Head, a small roadside inn on the left hand as you leave Epsom for Ashstead. When the host approached with the reckoning, it was found that the painter was without the means of liquidating it. It was agreed that the account should be paid by his executing a new sign-board. He painted both sides: on one a full-face view of Queen Charlotte, a dashing caricature of Sir Thomas's manner; on the other a back view of the Queen's head, as though she were looking into the sign-board, while underneath was inscribed 'T.L., Greek Street, Soho.' Sir Thomas, informed of this eccentric proceeding, said to Harlow:-- 'I have seen your additional act of perfidy at Epsom, and if you were not a scoundrel I would kick you from one end of the street to the other.' 'There is some privilege in being a scoundrel, then,' answers the pupil, 'for the street is very long.' So we read of the quarrel of Lawrence and Harlow, one of those stories so easy to relate and so difficult to disprove. But there are incoherencies about it. The portrait of Mrs. Angerstein was exhibited at the Royal Academy in the year 1800, some years before Harlow had become a pupil of Lawrence's. The speech about the kicking is a very unlikely one to have proceeded from Lawrence, while it is still more unlikely that Harlow would have received it so quietly. Had such language passed between them it is hardly possible they could have been on the footing of anything like friendship afterwards, yet we find Lawrence assisting Harlow in his picture of the Kemble family in quite an intimate way. Certainly there was a quarrel, and Harlow quitted Sir Thomas. A living writer says, in reference to the sign-board story:-- 'I remember to have seen it as early as 1815. Some twenty years after, missing this peculiar sign from the suspensory iron (where a written board had been substituted), I made inquiry at the inn as to the fate of Harlow's Queen's Head, but could not learn anything of its whereabouts.'