in 1753, his thesis ‘De Conceptu,’ 8vo, Edinburgh, 1753, being of so much value that it was reprinted by William Smellie in the second volume of his ‘Thesaurus Medicus’ (1779).

Merriman first settled as a physician in Bristol, and afterwards removed to Andover, Hampshire; but coming to London in April 1757, he commenced practice in Queen Street, Mayfair, as an apothecary or general practitioner, in partnership with Oakley Halford, who was about to retire.

He remained an apothecary for about twenty years, when he acted on his diploma, and practised only as a physician, finally retiring in 1812.

Merriman died at his son-in-law's house, 26 Half Moon Street, on 17 August 1818.

In 1753 he married one of the daughters and coheiresses of William Dance, surgeon, of Marlborough, and by her, who died in 1780, he had fourteen children; of these one alone, Ann, wife of his nephew Samuel Merriman, survived him.