His first medical book was "An Account of Experiments on Joanna Stephen's Medicine for the Stone", published in London in 1742. He published in Dublin in 1751 "A History of the Rise and Progress of the People called Quakers in Ireland, from 1653 to 1751", a continuation of a book originally written by Thomas Wight of Cork in 1700; a fourth edition was issued in 1811. In 1757 he published in London "A Methodical Synopsis of Mineral Waters", a quarto of 658 pages, which gives an account of the chief mineral springs of the British Isles and of Europe. He had thrown doubt on some statements of Charles Lucas in his account of the spa of Lisdoonvarna, County Clare, and Lucas issued a general attack on the book.