Which unit of dry volume was defined as containing eight gallons?
Quarter (unit) quarter (qr. av. or quartier) came to mean ¼ of a hundredweight: 2 stone or 28 avoirdupois pounds (about 12.7 kg). In measures of dry volume, it was equivalent to the seam or 8 bushels of 8 grain gallons of 272 cubic inches. In measures of liquid volume at the time of the Magna Carta, the quarter of wine was (originally) ¼ tun: 8 London bushels or 64 wine gallons. The tun was subsequently defined down 4 gallons to 252 and the quarter was effectively ¼ pipe or butt. The quarter of wine was a gallon larger than a hogshead.
Tun (unit) Tun (unit) The tun (, , Middle Latin: "") is an English unit of "liquid volume" (not weight), used for measuring wine, oil or honey. Typically a large vat or vessel, most often holding 252 wine gallons, but occasionally other sizes (e.g. 256, 240 and 208 gallons) were also used. In one example from 1507, a tun is defined as 240 gallons. The word "tun" is etymologically related to the word "ton" for the unit of mass, the mass of a tun of wine being approximately one long ton, which is . Originally, the tun was defined as 256 wine