An oration; delivered at th[e] King's-Chapel in Boston, April 8, 1776 : on the re-interment of the remains of the late most worshipful Grand-Master Joseph Warren, Esquire; president of the late Congress of this colony, and major-general of the Massachusetts forces; who wa slain in the Battle of Bunker's-Hill, June 17, 1775. By Perez Morton, M.M.