The happiness of doing good : A sermon preached before the Right Hon. the Earl of Hertford, president; the vice-presidents, treasurer, and governors of the Magdalen-House Charity, on Thursday the 12th of March, 1761, at the Parish Church of St. Brides, Fleet-Street. By the Right Reverend Dr. Richard Pococke, lord bishop of Ossory. Published at the request of the president, &c.