The bushel is an intermediate value between the
pound and
ton or
tun that was introduced to England following the
Norman Conquest.
Norman statutes made the
London bushel part of the legal measure of English
wine,
ale, and
grains. The
Assize of Bread and Ale credited to
Henry III, , defined this bushel in terms of the
wine gallon, while the
Assize of Weights and Measures usually credited to
Edward I or
II defined the London bushel in terms of the larger
corn gallon. In either case, a London bushel was reckoned to contain 64 pounds, 12
ounces, 20
pennyweight, and 32
grains. These measures were based on the relatively light
tower pound and were rarely used in
Scotland,
Ireland, or
Wales during the
Middle Ages. When the Tower system was abolished in the 16th century, the bushel was redefined as 56
avoirdupois pounds. The
imperial bushel established by the
Weights and Measures Act 1824 described the bushel as the volume of 80
avoirdupois pounds of distilled water in air at or 8 imperial gallons. The modern
American or
US bushel is rounded to exactly 2150.42 cubic inches, a difference of less than one part per ten million. In English use, a bushel was a round willow basket with fixed dimensions, and its inside measurements were as followsbase diameter 12 inches, top diameter 18 inches, height 12 inchesthus giving a volume of 2120.58 cubic inches. A basket filled level to the top was a bushel. A basket filled to the top but overfilled to a height where it overflowed was considered to be a bushel and a peck, a generous measure (a similar concept to a baker's dozen). The 1950 song "
A Bushel and a Peck" from
Guys and Dolls contains the lyric "I love you, a bushel and a peck", meaning "I am overflowing with love for you". Sometimes the basket was made 13 inches high, but with a ring of "waling" (a special willow weaving technique) to mark the 12 inches height: these baskets had a volume of 9311.68 cubic inches. ==Volume==