Comparison of the imperial and US customary measurement systems adopted a system based on the 231-cubic-inch wine gallon for all fluid purposes. This became the US fluid gallon. Both the imperial and US fluid gallon are divided into 4 quarts, 8 pints or 32 gills. However, whereas the US gill is divided into 4 US fluid ounces, the imperial gill is divided into 5 imperial fluid ounces. So whilst the imperial gallon, quart, pint and gill are about 20% larger than their US fluid measure counterparts, the fluid ounce is about 4% smaller. Note that one avoirdupois ounce of water has an approximate volume of one imperial fluid ounce
Jean Gallon Jean Gallon Jean Gallon (25 June 1878 - 23 June 1959) was a French composer, choir conductor, and music educator. His compositional output consists of six antiphons for strings and organ, one mass, one ballet, and several art songs. Born in Paris, Gallon was the elder brother of composer Noël Gallon. He had a long association with the Paris Conservatoire, first as a student, then as the director of concerts (1906-1914), and then as a faculty member from 1919 to 1949. A professor of harmony, he taught such notable musicians as Elsa Barraine, Paul Bonneau, Henri Challan, Georges Dandelot, Jean-Yves