A sermon preach'd at Trinity-Church in Cambridge, January the 25th, 1704/5 : Being the conversion of St. Paul. At which time and place the several teachers of the charity-schools, lately erected in Cambridge, appear'd, with the poor children under their care, in number about three hundred. To which is added, a particular account of the said charity-schools. The second edition. By William Whiston, M.A. professor of the mathematicks in the University of Cambridge.