. A duty of £7 per tun was levied on Madeira wine by the American Act of 1764, 4 Geo.
3, c. 15, §1; Knollenberg, Origin of the American Revolution
176–177. According to Webster's New Collegiate Dictionary
(Springfield, Mass., 1949), a tun was equal to two pipes, or about 250 gallons.
Cite web page as: Founding Families: Digital Editions of the Papers of the Winthrops and the Adamses, ed.C. James Taylor. Boston: Massachusetts Historical Society, 2014.